This sandstone mansion was the home of two of Oregon's most important pioneers.

The magic's in the hole!

This ancient theater was once the home of fierce gladiatorial battles.

Historic medieval fortified city in southwest France.

Hindu temple of the dead home to hundreds of long-tailed macaques.

This one has sailed five times as far as Sir Francis Drake's famous ship.

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

Richard III supposedly disposed of his nephews' bodies here in an effort to seal his claim to the throne.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

This statue once earned the distinction as one of the "Three Major Disappointments of the World."

The most playful of the life-sized statues that make up Singapore's "People of the River."

The busy transport hub is home to the tallest airport slide in the world.

This $62 million dollar temple was erected to house one little dental fragment of religious history.

Singapore's landscaping project is home to 18 incredible Supertrees.

Walk through living pictures and music in the Cathedral of Images.

Enchanting gardens surround a derelict mansion, all hidden in plain sight behind a stone wall.

New Jersey's last historic covered bridge was rebuilt from pieces of the original 19th-century structure.

The first partially complete dinosaur skeleton was discovered here, forever changing the world's view of the ruling reptiles.

Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."

The first American department store, and home to the largest operating musical instrument in the world.

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

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