These faux-cliff dwellings allow visitors to climb around on a replica archaeological site.

There are eight natural springs around town, each with a slightly different taste.

One woman's UFO-themed campground, complete with self-built energy vortexes, UFO-themed weddings, and magic bushes.

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

When ecosystems collide in the arid Southwest.

The largest self-built castle in the U.S., six decades in the making.

The spot in the Mile-High City that's exactly 5,280 feet above sea level (at least for now).

A downtown park built on top of unclaimed graves.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

Come for the flowers, stay for the bats!

A steampunk airship "floats" above Hamilton Gardens delivering plants and compost.

The real life Hobbiton, this sheep farm has been forever transformed since being built for The Hobbit film series.

World's largest collection devoted to one fruit.

Version of the French Riviera destroyed by the sea.

A cozy bookstore is tucked within an old gold mine shaft beneath the cafe and ice cream shop.

A shape-shifting buy-sell-trade bookstore, born to Beatnik Era spirit.

Where there's quartz, there must be gold. Thus is the story of the mines of Julian, and the titillating times of the Gold Rush.

A world-class observatory in the California desert.

Ingenious bakery opens up the first Cupcake ATM at their flagship location in Beverly Hills.

The unbelievably opulent home built for an infamous newspaperman.

An inconspicuous footbridge beloved by San Diego locals.

An extraordinarily ornate museum in San Diego holds wondrous anthropological treasures.

After starting as a whimsical tourist attraction that eventually found its way to ruin, these renovated canals offer a lush and exotic locale on the Pacific Coast.

The lowest point in North America is home to an undrinkable pool surrounded by fields of geometric salt flats.