Nokia FlexiBTS 3G or GSM BTS on top of a building in <a href="//commons.wikimedia.org/wiki/Katwijk" class="mw-redirect" title="Katwijk">Katwijk</a> (NL)
<a href="//commons.wikimedia.org/wiki/User:PPP" title="User:PPP">PPP</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>