Porte de Hal (French)/Hallepoort (Dutch) is a medieval fortified city gate of the second walls of Brussels. Closeup of the roof (2011). On the left side of the picture the entrance from Brussels is visible.
<a href="//commons.wikimedia.org/wiki/User:Jopparn" title="User:Jopparn">Jopparn</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>