Karlštejn is a large Gothic castle founded 1348 by Charles IV. It is located in town of Karlštejn, about 30 km southwest of Prague, Czech Republic.
<a href="//commons.wikimedia.org/wiki/User:TheGoldTiger" title="User:TheGoldTiger">Radomír Šalda</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>