The Kolk in <a href="https://en.wikipedia.org/wiki/Rotterdam" class="extiw" title="en:Rotterdam">Rotterdam</a>. One of the oldest names on a map of Rotterdam, the Kolk is now part of a foot bridge designed by Piet Blom in the 1980's along with his <a href="https://en.wikipedia.org/wiki/Cube_house" class="extiw" title="en:Cube house">Cube houses</a>.
<a href="//commons.wikimedia.org/wiki/User:Ivory" title="User:Ivory">Ivory</a>
<span class="int-own-work" lang="en">Own work</span>