Sacked by Vikings, blessed by William the Conqueror, dealt a fatal blow during the French Revolution—these ruins have seen it all.

The first green space constructed on an elevated viaduct.

Ireland's most remarkable collection of these curious cone-shaped houses is worth the buzz.

A scandalous Art Nouveau collaboration that set Paris all atwitter at the turn of the 20th century.

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

A museum of carnival attractions where you are invited to ride the rides.

France's most famous cemetery, with some of its most curious tombs.

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

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

Construction of Barcelona’s iconic (but controversial) church was finally completed in 2026—a century after the death of its architect.

The corpse bride of Portugal.

The ruins of this antebellum sugar plantation are the end result of a Seminole attack during the Florida Wars of 1836.

An abandoned mine now resembles a post-apocalyptic landscape of derelict buildings and blood-red pools of water.

Turntable anonymously received orphans, alms, and groceries.

A mosaic-tiled house built by graveyard sweeper Raymond Isidore.

Dead weights honor the dead of Portugal's fishing industry.

The stunning interior of this Gothic church is covered in ornate gold details.

A six-foot pair of socks hangs from a drawer of the world's largest bureau.

A psychological self-portrait in the form of a giant, segmented head.

Conjoined twins Daisy and Violet Hilton were stars of the vaudeville circuit.

Near the ruins of a Civil War coastal fortress lies the only known African refugee cemetery in the United States.

The museum chronicling a treasure hunter's dream, fulfilled.

Visitors are welcome to enter this lush Key West sanctuary to entertain its plethora of rescued parrots.