Designed to resemble a hoisted sail in honour of Hamburg's historic role as one of the world's greatest ports, it sits atop an older, redbrick building from the early 1960s, once a warehouse. At 108 metres, it is the tallest building in the city. Between the old warehouse and the glass structure is the Plaza - a public viewing area that extends around the whole building.
Besides two state-of-the-art concert halls (the acoustics were designed by Yasuhisa Toyota who installed about 10,000 individually microshaped drywall plates to disperse sound waves ) the building is also home to the Westin Hamburg hotel, which offers 244 rooms between the 9th and 20th floors. There are also 45 luxury apartments.