Tours of the tower are available on the last Saturday of the month on the hour from 10 a.m. to 2 p.m.
Due to long waiting times, booking in advance is highly recommended.
The tour of the tower is free.
Wikipedia https://zh.wikipedia.org/wiki/德國商業銀行大廈
Official website https://www.commerzbank.com/en/hauptnavigation/konzern/commerzbank_im__berblick/hochhaus_1/hochhaus.html
地址 Kaiserplatz 1, 60311 Frankfurt am Main, Germany
坐标 50°6'40.237" N 8°40'27.702" E