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A
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Access by road
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How you get to the MAIN TOWER
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Adress
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MAIN TOWER
Neue Mainzer Strasse 52-58
D-60311 Frankfurt am Main
Phone: ++49 (0)69 3650 - 4740
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Air-conditioning
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In the MAIN TOWER there are modern ventilation and air conditioning systems which with cooling and heating ceilings provide a balanced air conditions in the rooms.
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Architects
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In 1991 an architects' competition was held. Among the renowned architects from around the world, Schweger und Partner, Hamburg was awarded the prize.
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Art
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The American video artist Bill Viola presents his installation "The World of Appearances". Stephan Huber created "FRANKFURTER TREPPE / XX. JAHRHUNDERT".
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B
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Building height
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With its 200 metres, the MAIN TOWER is Frankfurt am Main's fourth highest skyscraper. Commerzbank (258 m), Messeturm (256 m), DG Bank (208 m)
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Building time
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Up to 1,000 workers built the MAIN TOWER in 3 years.
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Computer simulation
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To minimize air noise caused by the fast elevators, NASA computer simulations were carried out and streamlined exterior claddings were developed for the cabins.
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Construction method
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In erecting the MAIN TOWER, the so-called Deckelbauweise principle "construction work under top cover" was employed. This means that building work both upwards and downwards was carried out simultaneously.
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D
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Demolition
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Demolition of the existing building on the planned site of the MAIN TOWER started on 22.05.1996
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Drive-in plan
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How you get to the MAIN TOWER
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E
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Earth pendulum storage heater
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Water circulating in a closed circuit supports the generation of heat or coolness for the MAIN TOWER's rooms.
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Eating and drinking
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Eurest, the caterer in the building, offers an extensive range of food and drinks in the MAIN TOWER. Phone: ++49 (0)69 / 3650 - 4771
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Energy
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The MAIN TOWER is an energy-efficient building with sophisticated domestic engineering techniques.
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Entrance Fee
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The fees for the express elevators:
| Standard
| EUR 4,50
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| Reduced Fee
| EUR 3,00
| Family Ticket
(2 adults, 2 children)
| EUR 12,00
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The reduced fee applies to pupils, university students, retirees, handicapped visitors and groups of 30 or more.
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Facade
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The facade surface is divided into three parts: The building's base floors: stone facade, under preservation order, the square tower: bronze, round tower non-reflective glass facade.
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Floor
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The MAIN TOWER consists of 5 basement floors (underground) with parking spaces, storage rooms and the technical centres and 56 above ground floors, with offices, restaurant and hr-Studio (a studio of the Hessian broadcasting corporation), on two of which are observation platforms.
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Foundations
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The foundation of the MAIN TOWER consists of 112 reinforced concrete piles with a diameter of 150 - 180 cm, reaching to a depth of 50 m. In addition, the MAIN TOWER has a foundation plate which in the middle of the building is 3.80 m thick.
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Foundation slab
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On July 4th 1997 the foundation slab was concreted.
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Foundation stone ceremony
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The foundation stone was laid on October 10th 1996.
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Foyer
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The American video artist Bill Viola presents his installation "The World of Appearances". Stephan Huber created "FRANKFURTER TREPPE / XX. JAHRHUNDERT".
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Glass facade
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The round tower has a facade without visible window profiles, whereas the square has a element facade with deliberately emphasized window profiles bronze.
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Glass technology
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With regard to the facade construction, the use of the latest glass technology for the MAIN TOWER is especially remarkable.
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Gross floor area
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Both above and below ground, gross floor area is 101,705 m².
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Ground plan
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The MAIN TOWER consists of a round tower (200 m high) and square tower (170 m high).
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Handicapped people
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To enable handicapped staff and visitors to enter the building, revolving doors are installed on the ground floor. Toilets designed for the handicapped are located on both the ground floor and level 24.
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Heat generation
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The MAIN TOWER has its own combined heat and power station.
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Height
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200 m
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Helaba
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Landesbank Hessen-Thüringen Girozentrale is the general tenant of the MAIN TOWER.
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Hessischer Rundfunk
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(Hessian Broadcasting Corporation): In the tower pinnacle, Hessischer Rundfunk operates the highest television and radio studio in Europe on the E+53/E+54 floors.
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Historical facade
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The historical facade was dismounted stone by stone, the stones being numbered and then rebuilt into the facade to preserve its historical appearance.
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Investment volume
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The investment sum amounts to approx. DM 700 m.
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K
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Lettable space
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Total lettable space amounts to 62,957 m²
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Lighth
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Thanks to the room-high window front, the MAIN TOWER enjoys a high degree of natural daylight.
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Location
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The MAIN TOWER is located in the heart of the bustling, cosmopolitan economic metropolis Frankfurt am Main, in the centre of the banking quarter and within easy walking distance of the shopping streets, the Alte Oper ("old opera house", now a concert and conference centre), as well as the Freßgass' with its numerous restaurants and bars.
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Marriage
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A marriage on the 53th floor? The MAIN TOWER and the registry office of Frankfurt make it possible!
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Name
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The original working title of the project was Tower II. After conclusion in September 1996 of a competition to find a name for the building, MAIN TOWER was chosen out of 361 suggestions.
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Observation platform
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For the first time for a Frankfurt office skyscraper there is an observation platform in the MAIN TOWER open to the public, located at the pinnacle of the round tower on the E+55/+56 floors.
The opening hours:
Restaurant & Bar:
| Tuesday to Thursday, Sunday from 5.30 p.m. to 1 a.m.
Friday + Saturday from 5.30 p.m. to 2 a.m.
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Platform:
| During the winter from 10 a.m. to 7 p.m.
During the summer from 10 a.m. to 9 p.m.
(concurrently with the change to/from daylight saving time)
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The fees for the express elevators:
| Standard
| EUR 4,50
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| Reduced Fee
| EUR 3,00
| Family Ticket
(2 adults, 2 children)
| EUR 12,00
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The reduced fee applies to pupils, university students, retirees, handicapped visitors and groups of 30 or more.
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Office space
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Office space per floor is approx. 1,200 m².
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Opening hours
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Restaurant & Bar:
| Tuesday to Thursday, Sunday from 5.30 p.m. to 1 a.m.
Friday + Saturday from 5.30 p.m. to 2 a.m.
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Platform:
| During the winter from 10 a.m. to 7 p.m.
During the summer from 10 a.m. to 9 p.m.
(concurrently with the change to/from daylight saving time)
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Open to the public
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Access to the MAIN TOWER is open to the public.
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Parallel-opening windows
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The windows in the MAIN TOWER can be moved outwards electronically parallel to the facade surface, and unlike normal windows, are not tilted inwards or turned.
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Principal
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The principal is Helicon Verwaltungsgesellschaft GmbH und Co. Immobilien OHG, an enterprise of 36 savings banks, principally from Hesse and Thuringia.
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Project development
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The project was taken care of by OFB - Bauvermittlungs- und Gewerbebau GmbH, Frankfurt and Hines Immobilien GmbH, Houston, Texas.
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Reception
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From the main entrance in Neue Mainzer Strasse you first of all reach the MAIN TOWER Reception in the chief lobby.
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Registry Office
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A wedding on the 53th floor? The MAIN TOWER and the registry office of Frankfurt make it possible!
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Restaurant
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Eurest invites guests to use its public restaurant in the MAIN TOWER, with seating accommodation for 78 people and a further 20 places at the bar.
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Roofing ceremony
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On March 10th 1999 the roofing, ceremony of MAIN TOWER was held.
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Round tower
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The round tower reaches 200m, the maximum height of the building, and with its almost circular glass facade is the most striking part of the MAIN TOWER.
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Security
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Despite or rather because of the openness of the MAIN TOWER, it has a well-elaborated security concept with security personnel, surveillance cameras and a sophisticated entry control system.
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Silent cooling ceilings
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The cooling ceilings in the office rooms function as "upside down" floor heating and generate no noise.
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Site area
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The area of the plot is 3,355 m².
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Square tower
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The Square tower is six floors lower than the round tower and reaches a height of 170m.
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Stairs
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To reach the pinnacle on foot you have to climb 1,090 stairs!
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Technology
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The MAIN TOWER is equipped with state-of-the-art and resource-conserving domestic engineering systems.
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Tenants
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On a total lettable space of almost 62,000 m², about 2,000 people are employed.
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Underground engineering
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Special foundation work was started on August 8th 1996.
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Visiting hours
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Restaurant:
| Tuesday to Sunday from 5:30 a.m. to 11 p.m.
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Bar:
| Tuesday to Sunday from 5:30 p.m. to 1 a.m.
| Platform:
| During the winter from 10 a.m. to 7 p.m.
During the summer from 10 a.m. to 9 p.m.
(concurrently with the change to/from daylight saving time)
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Walled-in
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Above ground, 83,100 m³, below ground 18,600 m³
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Wedding
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A wedding on the 53th floor? The MAIN TOWER and the registry office of Frankfurt make it possible!
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Weight
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The shell of the MAIN TOWER weighs 200,000 tonnes.
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Windows
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The MAIN TOWER has 2,550 openable windows over the whole width of the rooms, from floor to ceiling.
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Zoning plan
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The MAIN TOWER is located in the heart of Frankfurt. The area in which the MAIN TOWER is situated is a mixed commercial and residential locality.
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