| Frankfurter Ring |
Bildrechte: Christian Wolf, <a rel="nofollow" href="https://www.c-w-design.de">www.c-w-design.de</a>, <a rel="nofollow" href="https://commons.wikimedia.org/wiki/File:Skyline_Frankfurt_am_Main_2015.jpg">Skyline Frankfurt am Main 2015</a>, <a rel="nofollow" href="https://creativecommons.org/licenses/by-sa/3.0/de/legalcode" rel="license">CC BY-SA 3.0 DE</a>