Congress Poland in 1815
<a href="//commons.wikimedia.org/wiki/User:Mathiasrex" title="User:Mathiasrex">User:mathiasrex</a> Maciej Szczepańczyk, based on layers of <a href="//commons.wikimedia.org/wiki/User:Kgberger" class="mw-redirect" title="User:Kgberger">User:kgberger</a>
CC BY 3.0
<span class="int-own-work" lang="en">Own work</span>