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

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

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

A large grotto built in the 16th century amidst Florence's famous Boboli gardens.

A musical instrument played by the sea.

The final resting place of the author who gave us the Little Mermaid, the Ugly Duckling, and many more beloved fairy tales.

It houses the remains of a 17th-century version of the Titanic.

One man's exploration of the human form, including the bizarre and delightful "Man Attacked by Babies."

This functioning parish church is also the site of many concert performances due to its wonderful acoustics.

This city square is home to Amsterdam's oldest church and a statue honoring Dutch sex workers.

A little sculpture with a large wardrobe.

The largest cemetery in Chile is the final resting place for more than 2 million people, from politicians to artists.

This geometric feat is a testament to the Incas' mesmerizing architectural abilities.

An ancient Incan convent on Lake Titicaca's Island of the Moon.

Buenos Aires' city of the dead contains some very famous remains, including Eva Perón.

This Brazilian town built by Freemasons is full of colonial Masonic architecture and symbolic imagery.

Also known as the Blue Church, the building was consecrated to the daughter of Andrew II.

Central America's deepest lake is actually a volcanic caldera, surrounded by three volcanoes.

No one knows the meaning behind this giant sculpture of a nude woman with a fork riding a rooster in Havana.

This graveyard boasts a medley of diverse and imaginative funeral architecture.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

Medicinal spa created with the discharge from a geothermal energy plant.

A nightmare for the claustrophobic lies hidden in Southeast Asia.

5,000 skulls in memorial to those killed by the Khmer Rouge.