Where the White Nile River dramatically cascades between Lake Kyoga and Lake Albert in Uganda.

Trek through the jungle on a boat and a swinging bridge and you'll be rewarded with these refreshing, if pungent, mineral pools.

Erosion and time have created a naturally-formed water park.

The most powerful waterfall in all of Europe.

There's something big lurking beneath the surface of this tiny Oregon park.

On the Oregon coast there is a natural hole that seems to be draining the sea.

Most-visited and most-photographed slot canyon in the American Southwest.

An eerie, derelict amusement park in Berlin.

Bring your own cardboard to the slippery slopes of concrete hidden in a neighborhood park.

Rippling sand dunes frozen in the Arizona rock.

An artsy hidden staircase leads to breathtaking views of San Francisco.

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

A terrific purveyor of natural history objects and curios.

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

A huge musical instrument played by the ocean.

Kitschy horror displays now fill the house where some very real serial killing took place.

Peaceful gardens hide an underground torture museum.

A tomb in the shape of a traditional Mexican hat and shawl for the father of modern rancheras.

A sapling of the legendary tree where conquistador Hernán Cortés sat and wept after an Aztec uprising.

The excellent Swiss museum of witchcraft is led by a modern witch.

This Oaxacan town is known for its colorful fantastical creatures hand-carved by local artisans.

This intriguing museum chronicles the history and impact of immigration in Brazil.

Cartoon clouds and nature-inspired murals have transformed the streets of Kuala Lumpur.

A delightful architectural wonder awaits on a lake island in Kuala Lumpur’s oldest park.