The infobox lists Helmut Jahn and Richard Murphy as architects, while the prose names only Jahn. Construction started on July 13, 1988, and the tower opened in October 1990. Tishman Speyer Properties and CitiBank developed it at a cost of 500 million Deutsche Marks. Ingenieurbüro Fritz Nötzold was the structural engineer and HOCHTIEF the main contractor.
The roof is 843 feet (257 m) high, and the top floor is at 748 feet (228 m). There are 63 floors, including two below ground. The square footprint rises into a cylindrical section and ends in a 119-foot (36.3 m) pyramid. Total floor area is 664,300 square feet (61,711 m²).
It was the tallest building in Europe, the European Union and Germany from 1990 until 1997, when the Commerzbank Tower surpassed it. A subway connects directly to the tower. The article gives no facade details.

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