A church of bones, decorated with 40,000 human skeletons.

When a supermarket opened up shop within a medieval building it became protected by UNESCO on a technicality.

The big toe of this towering monument to a Croatian national hero is worn from years of superstitious rubbing.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

Baroque celebration of the end of the Great Plague of Vienna.

The final resting place for the remains of 143 Habsburg royalty.

Built to give thanks for the passing of a plague epidemic, this cathedral is a one-of-a-kind architectural hybrid.

A memorial dedicated to those who lost their lives working in what is now a massive tourist attraction.

The stones of this formerly witch-obsessed castle were used to build a church.

This strange bovine gargoyle is said to have been put in as a passive aggressive form of revenge.

In Florence's great Duomo, a 26 foot fresco honors a mercenary famous for attacking Florence.

Secret refuge and museum of the Duke of Florence.

Over 50 exquisite hand-painted Renaissance maps decorate a Medici storage room.

Once home to one of the oldest banks in the world, this building is also where Marco Polo's famous travelogue was written.

The bomb-ravaged remains of of a colossal Neptune.

Small on the outside, big on the inside, this church is an astonishing act of visual deception.

The secret medieval communication system will whisk your words above the noise of the crowd.

This artistic fountain display pays homage to this area's theatrical history.

Along the Rhine, about a mile from the historic Munster, learn the heartrending story of two lovers torn asunder, cast into unknown layers of time and space.

It's good luck to be mocked by this monkey.

An expansive complex of subterranean tunnels is all that remains of one of Europe's most formidable medieval fortresses.

An extensive collection of reliquaries containing the bones of saints housed in the largest Catholic church in Venice.

Those who own or stay at this 500-year-old, allegedly cursed house often meet terrible fates.

Several land speed world records were shattered at this Welsh beach.