The sign for the Jim Thompson House Museum in Bangkok, Thailand at the entrance.  Photography of the interior of the museum is forbidden and visitors must leave their cameras behind when touring the complex.
<a href="//commons.wikimedia.org/wiki/User:BrokenSphere" title="User:BrokenSphere">BrokenSphere</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>