Monument for Amsterdam. Greetings to Amsterdam in the year 2477 from  Engels (Peter Engels: Peter 'English') and Dutch. Must be opened in 2477. Inside are  buried images of time in a sealed steel box. Artist: Pieter Engels.
<a href="//commons.wikimedia.org/wiki/User:Richardkw" class="mw-redirect" title="User:Richardkw">Richardkw</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>