WestendDuo is a 96 meter (315 feet) high office tower on Bockenheimer Landstrasse in the Westend district. The property consists of a twin tower, and the facade is giving the building a shimmering texture. The WestendDuo has a gross floor area of 32,700 square meters (351,980 square feet), which is spread over 26 upper floors and 4 basement floors. The original working title of Westend Duo was Tower 24.
WestendDuo was developed by HOCHTIEF Projektentwicklung and designed by KSP Engel und Zimmermann Architekten (now KSP Jürgen Engel Architekten). The high-rise was completed in 2006. The 26 floors of the office property are heated by geothermal energy. There are also heating and cooling ceilings, floor-to-ceiling windows that can be opened and an external electrical sun protection system.
The largest single tenant of the WestendDuo is the law firm Hengeler Mueller on floors 6, 15, and 17 to 25. The ground floor is open to the public in the form of an Italian restaurant and a sushi shop, the reception and a branch of the Bank of China are on the second floor. There is also a PRIME TIME fitness gym here. There is a closed underground car park under the building. Today the property is owned by an open real estate fund of DWS Grundbesitz GmbH.
In 2008, the WestendDuo Frankfurt received the International High-Rise Award and in the same year the special award for sustainability from the Prime Property Award.
In the past, the HOCHTIEF High-Rise from the 1960s by the architect Egon Eiermann was present. This building was not considered for monument protection despite its architectural style, because among other things there are still two stylistically similar buildings in the Frankfurt office district of Niederrad, the so-called Olivetti Towers.