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

The monument honors the mountaineers who were part of Europe’s best anti-Nazi forces.

An unmistakable facial pareidolia in the Julian Alps also includes a fantastic tale.

A public work of art that also provides some relief from the summer heat.

In between two buildings in Ljubljana, medieval tunnel to nowhere.

This demon atop the Notre-Dame de Paris looks utterly bored.

The celebrated eyesore created by starry-eyed sweethearts.

A Parisian cemetery where the elite and artistic are interred beneath an eccentric collection of tombs.

This museum houses an imposing skeleton army comprised of creatures great and small.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

The very center of Paris is surrounded by a bevy of strange good luck rituals.

A horde of stray cats rule in this secluded Parisian cemetery under a bridge.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

This museum has a most unusual location: inside a giant, three-headed elephant.

Thailand's distressed elephants find peace at this Chiang Mai sanctuary.

A jazz band formed by African water animals in the heart of Flemish Brabant.

A fascinating and enormous collection of natural history exhibits stained by a dark colonial legacy.

Banished from town, this local jester concocted a clever return.

This interactive sculpture allows visitors to leave a message in case a friend passes by.

This statue dedicated to the story of a Flemish boy and his dog was relatively obscure in Belgium, but a cult sensation in Japan.

The legendary giant's severed hand sits on Antwerp's popular shopping street.

This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.

This giant urban staircase was built to keep the city's brave fighting men from getting waylaid in the red light district.

This centuries-old gothic monster has been converted into a sprawling, glossy bookstore.