Pull up and have a drink at a museum filled with hundreds of years worth of shipwreck artifacts.

The last of Amsterdam's original sea level markers remaining in place.

A late-medieval Dutch castle with trick fountains in its whimsical water gardens.

Notorious artist squat renovated into legal studios.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

This hidden Art Nouveau courtyard is an opulent feast for the eyes.

Place with alleged mystical powers in Old Orthodox Church in Sarajevo.

A number of craters left by fatal mortar strikes have been filled with red resin to remember those lost during the Siege of Sarajevo.

The skulls and bones of thousands of soldiers line the walls of this small Italian chapel.

In this medieval church, a centuries-old stuffed crocodile hangs from the ceiling.

The bones of some 7,000 soldiers killed in the historic Battle of Solferino are stored here.

Two very green residential towers cleaning the air in one of Europe's most polluted cities.

This hanging crocodile is thought to be the "dragon" that once plagued a Czech city.

A peculiar clock commemorates a historic victory won by ringing the noonday bell an hour early.

An enormous and lavish Gothic church in Czechia.

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

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.

Macabre astrological automaton clock dating to the late 1400s.

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

This small chapel is built of human bones and decorated with a golden skeleton.

A 16th century chapel decorated with bones, skulls, and entire bodies hanging from the wall.

This once-forgotten oasis in the middle of Lisbon was first created over a century ago quite by accident.