Mosaic  by <a href="https://en.wikipedia.org/wiki/Manfred_Stumpf" class="extiw" title="en:Manfred Stumpf">Manfred Stumpf</a> at Habsburgerallee (Underground station), Frankfurt am Main
<a href="//commons.wikimedia.org/wiki/User:Blaise_Mann" title="User:Blaise Mann">Blaise Mann</a>
CC BY 2.5
Photography made by myself