Looming communist pillar with a Czech twist.

Mummified monks and the accidentally interred, in a 17th-century crypt.

Synagogue built from the stones of Solomon's temple contains the golem of Prague.

Europe's second largest ossuary wasn't discovered until 2001.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

Countless grotesque faces stare out from this eerie Prague art wall.

Macabre astrological automaton clock dating to the late 1400s.

Two stunning 17th-century libraries and a cabinet of curiosities.

After Christopher Columbus died, his son built a fancy house to rule from.

The first hospital in the New World.

Built in 1512, the oldest cathedral in the Americas.

A collection cataloguing one of the most brutal dictatorships in modern history.

The oldest colonial fortress in the Americas was once the home and later prison of Christopher Columbus.

One of the few surviving street funiculars in the world.

The world's largest prehistoric copper mine had 30,000 animal bones scattered throughout the maze of passageways.

This 6th-century church honors St. Tudno, the patron saint of Llandudno.