TaunusTurm, Office skyscraper in Financial District, Frankfurt, Germany

TaunusTurm is a 170-metre office tower at the corner of Neue Mainzer Straße and Taunustor, with 40 storeys and 75,000 square metres of gross floor area. Its facade mixes light-coloured stone with a dominant share of glass, set as a grid of blue and grey panels between pale mullions. A separate 63-metre residential tower with 54 flats stands beside it, and a lower white section with square windows sits in front of the base.

The site was designated for a 135-metre tower in Frankfurt's 1998 high-rise development plan, then called Kaiserkarree. Gruber + Kleine-Kraneburg won the 2000 competition, but the dot-com crash and the 2001 attacks stalled the project; Tishman Speyer and Commerz Real bought the plot in 2007 and split it into two towers. Demolition began in 2010, was halted when the prospective main tenant withdrew, and resumed in January 2011; construction started in April 2011 and the first tenants moved in in February 2014.

The name comes from the adjacent Taunusanlage park, the western stretch of Frankfurt's Wallanlagen; the Taunus itself is a low mountain range north of the city. The site at Neue Mainzer Straße and Taunustor was one of the locations approved in the city's 1998 high-rise development plan. Since 19 October 2014 the tower has housed TOWERMMK, over 1,500 m² of exhibition space for the Museum MMK für Moderne Kunst, provided free for 15 years.

The complex stands at the corner of Neue Mainzer Straße and Taunustor, beside the Taunusanlage park. The office tower and the 63-metre residential block are separate buildings, and the tower's base holds a publicly accessible lunch restaurant. The upper floors are offices, so visitors generally stay in the ground-floor passage with its shops and food outlets.

Since 19 October 2014 the TaunusTurm has housed TOWERMMK, a branch of the Museum für Moderne Kunst with over 1,500 m² of exhibition space, provided rent-free for 15 years; running costs are covered privately, including by entrepreneur Stefan Quandt, the Ernst Max von Grunelius Stiftung and Helaba.