The sculpture's largest spire points directly toward the North Star.

An abandoned aircraft sits submerged in a lake in the Alaska wilderness.

Mind-blowing carvings and fantasy ice scenes grace the largest year-round ice environment in the world.

While not recognized by Guinness, this chocolate waterfall is likely to be the world's largest.

Upside-down trees serve as natural flower pots in this hanging garden of Alaska.

Sleep in a glass pod dangling off a cliff.

One Costa Rican island is so beset by illegal shark poachers that the local rangers have built an entire bridge with their confiscated gear .

Once the foundation for a mansion, these ruins now offer amazing panoramic coastal views.

This Costa Rican topiary park is a surreal garden of unearthly delights.

Where dogs like the rare "Fire-Tailed Border Cocker" run free on the mountainside.

This neon blue river gets its color from a unique mix of bacteria and volcano minerals.

These mysterious ancient stone spheres were created by a civilization lost to time and are now mostly lawn ornaments.

The sister plane of the C-123 shot down during the Iran-Contra Affair has found a new purpose in retirement.

View rare birds and interact with lemurs at this nonprofit run entirely by volunteers.

Costa Rican accommodation resembles a crash site, but with a nice balcony.

Sloth rehabilitation center in the jungle of Costa Rica.

San Francisco's urban bison herd has persisted in the face of extinction, development, and disease.

A winding path built in secret on the edge of the continent.

A huge musical instrument played by the ocean.

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

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

This enormous sports car themed amusement park is home to the world’s fastest roller coaster.

Planned as the world’s first zero-carbon city, it had lofty ideals—but is only 5 percent completed and aiming for 50 percent carbon-neutral.

Whitewashed mosque contains the world's largest carpet.