Casper David Friedrich, Monk by the Sea

Caspar David Friedrich 016.jpg
"Caspar David Friedrich, Memories of the Giant Mountains, 1835" by Caspar David Friedrich - Hermitage Torrent (.torrent with info-hash). Licensed under Public domain via Wikimedia Commons.

Caspar David Friedrich - Wanderer above the sea of fog.jpg
"Caspar David Friedrich - Wanderer above the sea of fog" by Caspar David Friedrich - The photographic reproduction was done by Cybershot800i. (Diff). Licensed under Public domain via Wikimedia Commons.