Panoramablick auf den Main Tower und Frankfurts Skyline aus der Ferne.

A highlight in the skyline

Even in miniature, the MAIN TOWER convinced the experts: In an international competition in 1991, the jury decided in favour of the model designed by Hamburg-based architects Schweger and Partners.

With a clear language reduced to the basic forms of circles and squares, the MAIN TOWER had an unmistakable appearance of its own from the outset. Yet, with its balanced proportions, it blends harmoniously into the cityscape and into the ensemble of the skyline. This is not least thanks to the carefully chosen gradation between the filigree 200 m round tower, the 170 m square tower and the base, which in turn makes use of the original building from the early 20th century, thus creating a close connection to the adjacent skyscrapers. Incidentally, the architecture of the MAIN TOWER won the IMMOBILIEN AWARD 2001 at the CIMMIT congress.

The MAIN TOWER at a glance

Height:200m (240 m including the antenna)
Floors:56 above ground, 5 below ground
Construction time:3 years
Topping-out ceremony:10 March 1999
Amount invested:Approx. EUR 350 million
Usable space:

Premises: 3.355 m
Office space per floor: approx. 1.200 m2
Gross floor space: 101.705 m2
Total lettable floor space: 62.000 m2
Interior space:
83.100 m3 (above ground)
18.600 m3 (below ground)

People employed:Approx. 2.000
Lifts:26 passenger lifts
3 good lifts
Top speed: 4 bis 7 m/s

FAQ about the MAIN TOWER from A to Z



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.


In 1991 an architects' competition was held. Among the renowned architects from around the world, Schweger und Partner, Hamburg was awarded the prize.


The American video artist Bill Viola presents his installation "The World of Appearances". Stephan Huber created "FRANKFURTER TREPPE / XX. JAHRHUNDERT".


Building height

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)

Building time

Up to 1,000 workers built the MAIN TOWER in 3 years.


Computer simulation

To minimize air noise caused by the fast elevators, NASA computer simulations were carried out and streamlined exterior claddings were developed for the cabins.

Construction method

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.



Demolition of the existing building on the planned site of the MAIN TOWER started on 22.05.1996


Earth pendelum storage heater

Water circulating in a closed circuit supports the generation of heat or coolness for the MAIN TOWER's rooms.


With 4 to 7m/sec, the elevators in the MAIN TOWER are among the fastest in Germany.


The MAIN TOWER is an energy-efficient building with sophisticated domestic engineering techniques.



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. Further information Structure & facade


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.


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.

Foundation slab

On July 4th 1997 the foundation slab was concreted.

Foundation stone ceremony

The foundation stone was laid on October 10th 1996.


The American video artist Bill Viola presents his installation "The World of Appearances". Stephan Huber created "FRANKFURTER TREPPE / XX. JAHRHUNDERT".


Glass facade

The round tower has a facade without visible window profiles, whereas the square has a element facade with deliberately emphasized window profiles bronze. Further information Structure & facade

Glass technology

With regard to the facade construction, the use of the latest glass technology for the MAIN TOWER is especially remarkable.

Gross floor area

Both above and below ground, gross floor area is 101,705 m².

Ground plan

The MAIN TOWER consists of a round tower (200 m high) and square tower (170 m high).


Heat generation

The MAIN TOWER has its own combined heat and power station.


200 m


Landesbank Hessen-Thüringen Girozentrale is the general tenant of the MAIN TOWER. Further information can be found in the section Art in MAIN TOWER.

Historical facade

The historical facade was dismounted stone by stone, the stones being numbered and then rebuilt into the facade to preserve its historical appearance.


Investment volume

The investment sum amounts to approx. DM 700 m.


Lettable space

Total lettable space amounts to 62,957 m².


Thanks to the room-high window front, the MAIN TOWER enjoys a high degree of natural daylight.


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. How to get and park here.



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.


Observation plattform

The observation platform of the MAIN TOWER on Floor 55/56 is the observation platform in Frankfurt to offer public access.

Office space

Office space per floor is approx. 1,200 m².

Open to the public

Access to the MAIN TOWER is open to the public.


Parallel-opening windows

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.


The principal is Helicon Verwaltungsgesellschaft GmbH und Co. Immobilien KG, an enterprise of 36 savings banks, principally from Hesse and Thuringia.

Project development

The project was taken care of by OFB - Bauvermittlungs- und Gewerbebau GmbH, Frankfurt and Hines Immobilien GmbH, Houston, Texas.



Food affairs invites guests to use its public restaurant in the MAIN TOWER, with seating accommodation for 80 people and a further 10 places at the lounge.

Roofing ceremony

On March 10th 1999 the roofing, ceremony of MAIN TOWER was held.

Round tower

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.



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.

Silent cooling cellings

The cooling ceilings in the office rooms function as "upside down" floor heating and generate no noise.

Site area

The area of the plot is 3,355 m².

Square tower

The Square tower is six floors lower than the round tower and reaches a height of 170m.


To reach the pinnacle on foot you have to climb 1,090 stairs!



The MAIN TOWER is equipped with state-of-the-art and resource-conserving domestic engineering systems.


On a total lettable space of almost 62,000 m², about 2,000 people are employed.


Underground engineering

Special foundation work was started on August 8th 1996.



Above ground, 83,100 m³, below ground 18,600 m³


The shell of the MAIN TOWER weighs 200,000 tonnes.


The MAIN TOWER has 2,550 openable windows over the whole width of the rooms, from floor to ceiling.


Zoning plan

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.

Brochures to download

You will also find facts and figures about the MAIN TOWER in our 20-page brochure, which we are happy to provide you with in PDF format.

Brochure "MAIN TOWER – Welcome!" (PDF, 1.5 MB)

Our book recommendation

If you are interested in discovering more details about the technology and architecture, we would recommend the book entitled “MAIN TOWER” by Ingeborg Flagge, published in 2000 by Ernst Wasmuth Verlag (ISBN 9783803001993).


Do you like to receive some wonderful impressions from the MAIN TOWER? Let´s start!
In the lower right corner of our website, you can find a gallery with full screen photos of the MAIN TOWER.

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