This outdoor observatory offers stellar views and a scale model of our solar system.

The quirky salon doubles as a retro museum run by the world's leading "hairstorian."

Explore 10 acres of environmental sculptures.

A regular looking rock with an unbelievable history.

Experience a quartz crystal sound bath inside a storied, all-wood sound-chamber.

Mexican food and folk art.

An artist's vision for connectivity spans seven continents and 16 countries.

A fake town founded by Western movie stars is now becoming a hip desert community.

A music-filled, booze-soaked oasis in the desert.

A meditative space out of a fantasy story.

Double spiral staircases are not unheard of, but they are very rare.

The Swiss artist's bulbous and overgrown shape-shifting sculpture controversially graces the center of Bern.

An architectural oddity of six stories, accessed by graceful ramps.

This palatial spiral staircase was so unusual the name "snail" was given to the noble family who built it.

This dramatic landscape hidden on the Isle of Skye looks as though you've stepped into the magical realm.

A long spiraling walkway winds through the woods, and around a copper beech tree at the center.

A lavish 16th-century mansion filled with spectacular staircases, fantastic frescoes, and gorgeous gardens.

An earthwork sculpture built by Robert Smithson in the Great Salt Lake only reemerges during drought.

At this Denver landmark, the meals are compulsory, the sopapillas are complimentary, and the insanity is everywhere.

This sculpture of a fisherman spent six years at the bottom of the Schuylkill River.

These medicine cabinet staples are part of the museum's collection of everyday objects.

One of Philadelphia's largest murals resides hidden under this bridge.

The oldest of only three existing statues of the great novelist stands in a city he did not care for.

A curious building honoring past and current members of a historic musical comedy troupe.