Main Tower is a 56-storey, 200 m (656 ft) skyscraper in the Innenstadt district of Frankfurt, Germany. It is named after the nearby Main river. The building is 240 m (787 ft) when its antenna spire is included.

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Main Tower
General information
Type	Commercial offices
Location	Neue Mainzer Straße 52-58 Frankfurt, Hesse, Germany
Coordinates	50°06′44″N 8°40′19″E
Construction started	18 October 1996
Completed	March 1999
Opening	28 January 2000
Cost	700 million Deutsche Mark
Height
Antenna spire	240 m (787 ft)
Roof	200 m (656 ft)
Technical details
Floor count	56 5 below ground
Floor area	101,705 m2 (1,094,700 sq ft)
Lifts/elevators	27
Design and construction
Architect(s)	Schweger + Partner
Structural engineer	Burggraf, Weichinger + Partner Förster + Sennewald Ingenieurgesellschaft mbH
Main contractor	Hochtief AG Philipp Holzmann AG
Other information
Public transit access	Taunusanlage (10 min)
References
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The tower has five underground floors and two public viewing platforms. It is the only skyscraper in Frankfurt with a public viewing observatory. As of 2023, it is the fourth-tallest building in Frankfurt and the fourth-tallest in Germany, tied with Tower 185.

The foyer of the building has two art pieces accessible to the public: the video installation by Bill Viola "The World of Appearances" and the wall mosaic by Stephan Huber "Frankfurter Treppe / XX. Jahrhundert" ( "Frankfurt's Steps/20th century").

The tower's design features what appears to be two connected towers. The smaller of the two is of a cuboid shape and a design common to 1970s architecture. The second and taller of the two towers is circular with a blue glass exterior which features the transmission tower on top.

The structure was built between 1996 and 1999, and serves as headquarters for Landesbank Hessen-Thüringen (Helaba). Other tenants are the German Offices of Merrill Lynch and Standard & Poor's and a television studio of the Hessischer Rundfunk. Prominent US law firms Sullivan & Cromwell and Cleary Gottlieb Steen & Hamilton are also residents of the Main Tower. The first tenants moved in on 5 November 1999, and the official inauguration was 28 January 2000. During weather reports by the television station, the weather reporter stands on the top of the building.^{[citation needed]}

In June 2015, NorthStar Realty Finance of New York entered into an agreement to acquire Main Tower for about €540 million.^[5][6]

• List of tallest buildings in Frankfurt
• List of tallest buildings in Germany
• List of tallest buildings in Europe