Columbia subject headings:
Harvard subject headings:
AfE-Turm (Frankfurt am Main, Germany)
Campus planning--Germany--Frankfurt am Main--History.
College buildings--Germany--Frankfurt am Main--History.
Frankfurt am Main (Germany)--Buildings, structures, etc.
Space perception--Germany--Frankfurt am Main--History.
Towers--Germany--Frankfurt am Main--History.
Universität Frankfurt am Main--Buildings.
Princeton subject headings:
Space.
Universität Frankfurt am Main--Buildings.