Manhattan’s Battery Park has a whimsical carousel full of spinning, glowing fish.

A museum dedicated to exhibiting remarkable outsider art.

This massive mall has hundreds of shops, an amusement park, and a history of deadly amusement attractions.

Copenhagen's celebrated theme park and gardens.

No need to strap in for a "ride" on this walkable roller coaster.

A multi-storied adobe complex has been inhabited for more than a thousand years.

Southern California’s Theme Park Beginnings.

San Francisco's newly reopened hands-on science museum.

Where beautiful signs live on forever.

An art deco ice cream shop covered in vintage train station tiles.

Tokyo’s only Vaudeville-cuckoo clock–steampunk-Victorian curio cabinet time piece.

A magical place that lets you play in and explore the world of Studio Ghibli.

The National Railway Museum in York is the largest railway museum in the world, attracting almost 1 million visitors per year.

A bizarre house filled with an astounding array of collections.

The oldest restaurant in the world is this old-world Spanish eatery, still known for its suckling pig.

The hidden jewel of Disneyland: a members only playground for the Disney elite.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

An ancient and majestic fortress that played an integral role in Portugal's road to independence.

This former charity hospital for elderly clergy houses some of Seville’s most treasured paintings.

Beautiful Victorian buildings from L.A.'s forgotten architectural past.

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

Towering basalt columns, a creation of fire and ice.

This naturally heated mountainous creek has created a group of neon blue pools of potentially deadly boiling water.