WestendGate, Modern skyscraper in Westend, Germany

The WestendGate is a modern 47-story skyscraper in Frankfurt's Westend district standing 159.3 meters tall. The building houses hotel rooms, office space, and event facilities distributed across multiple levels with a distinctive entrance pavilion.

The building was completed in 1976 according to designs by architects Siegfried Hoyer and Richard Heil and briefly became Germany's tallest structure upon completion. Since 1989, the Marriott Hotel Group has operated the upper 18 floors, transforming the high-rise into an international business and tourism hotel.

The name "WestendGate" references its location in Frankfurt's Westend district, an area that has become known for upscale hotels and international business activity. Visitors notice the mix of business travelers and international guests moving through the building, which has become a central meeting point for conferences and events.

The entrance is on Hamburger Allee 2–4, directly opposite the main entrance of the Frankfurt Trade Fair grounds. The Marriott reception is on the ground floor, its ballroom on the first floor, conference rooms on the fifth, and hotel floors run from 26 to 44; the Adagio Aparthotel occupies floors 4 to 10.

The building was renamed Westend Gate in 2011, when it was completely renovated as a green building. Its earlier name, Plaza Büro Center, survives in the office section, while the hotel has been run by Marriott since 1989. Since September 2016 the Adagio Frankfurt City Messe aparthotel has occupied floors 4 to 10 with 172 apartments.