The world’s largest Masonic temple was saved by the White Stripes.

To truly appreciate Detroit's landmark skyscraper, you have to step inside.

Along a coast that sees the annual migration of humpback whales, a geological formation that takes the shape of a whale’s tail.

A six-story-tall golden pyramid, surrounded by a moat.

This lakefront cottage was crafted in the 1800s and was once a sanitorium.

Oversized statues are just the tip of this nostalgic Americana roadside attraction.

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.

The subterranean "lake" below the Paris opera house inspired the Phantom of the Opera's lair.

The tombstone of an unfortunate explorer who disappeared in the Paris Catacombs.

Behind the pink curtain, Au Bonheur du Jour, an art gallery of erotic archives.

A haunting collection of the vanished and disappearing natural world.

This massive library holds what was once the largest book collection in the world.

Known as the "Dodo Manège," this carousel features a herd of animals that have disappeared—or may be gone soon.

This recessed garden protects thousands of mountain plants by creating its own microclimates.

The history of radiation is on safe display at the foot of a radiation science laboratory.

This frog-themed restaurant was frequented by Picasso, Saint-Exupéry, and more.

A surrealist timepiece by the artist of melting clocks.

Walk upon the mementos of the dead in this Parisian courtyard paved with medieval tombstones.

A meditative walk up 353 stairs leads to a majestic white Buddha overlooking Pai.

This extensive collection of dead bugs may be the world's most idiosyncratic and personal insect museum.

Buddha shrines hide within dark tunnels at this unique forest temple.

Thousands of bats stream out of caves every night on the edge on Thailand's second largest park.

The golden Buddha statue at the Wat Muang Monastery is the tallest in Thailand, and the ninth-tallest in the world.