A room hidden behind a swinging shelf in the children's section.

Comprehensive gaming collection of over 30,000 electronic games and consoles.

A collection of the best toys ever made, The National Toy Hall of Fame is filled with kids, fun, and for some reason, a bird preserve.

The highest bridge in America was built for an almost unnervingly small amount of money.

Once decrepit and slated for demolition, now one of the longest pedestrian bridges in the world.

Follow the steps, and this roadside artwork will teach you how to dance.

This funicular railway rumbles along for a mile up the nearly vertical face of Chattanooga’s Lookout Mountain.

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

Three playfully immersive mini golf courses let you travel alongside your ball to the cup at this facility, which has been around since the 1950s.

Prayers and messages of hope decorate the ceramic tiles of this pavilion.

A Milwaukee museum provides an unsparing and ultimately empowering look at the Black American experience.

This striking art museum holds an amazing series of curiosity cabinets.

Literally a million fascinating cartographic artifacts are held in this sprawling university collection.

This contemporary art museum is filled with other, smaller museums, which feature work from artists primarily in the Pacific Northwest.

A rotting tree in the middle of Seattle doubles as an elaborately-controlled art piece.

These aggressively sustainable art homes look like something out of 1970's science fiction.

An outdoor sculpture park of giant pink robots and post-apocalyptic Christmas scenes.

Peruse rare tomes like poetry bound in pearls or books with branches and berries growing out of their spines.

The tech giant built three enormous glass orbs in Seattle so employees could work inside a rainforest greenhouse.

Hidden within the waterfront hills resides this dilapidated military stronghold.

One of the oldest Mexican restaurants in the United States air-dries its trademark beef in a dangling outdoor cage.

This house designed by Frank Lloyd and Louis Sullivan was destroyed twice and reconstructed to near original condition.

This fairytale-inspired cottage was created by a university literature professor.

One of only two pod-shaped homes designed by Frank Lloyd Wright.