Nestled among the verdant foliage in Kromlau, Germany’s Kromlauer Park, is a delicately arched devil’s bridge known as the Rakotzbrücke, which was specifically built to create a circle when it is reflected in the waters beneath it.

Commissioned in 1860 by the knight of the local town, the thin arch stretching over the waters of the Rakotzsee is roughly built out of varied local stone. Like many similarly precarious spans across Europe, the Rakotzbrücke is known as a “devil’s bridge,” due to the colloquialism that such bridges were so dangerous or miraculous that they must have been built by Satan.

Today, the bridge can still be viewed in the park, but crossing the aging relic is prohibited in order to preserve it.