A well-preserved Ancestral Puebloan ruin tucked beneath a desert cliff.

A house carved into a rock in the 1940s.

One of the world’s largest collections of petroglyphs records 2,000 years of human activity.

A wall of chewing gum moonlights as collective art.

Take shelter from Hawai'i's tropical heat under the massive canopy of largest Banyan tree on the island.

A charming remnant of 19th-century fishing towns sits on Michigan’s Leelanau Peninsula.

This national park on the shore of Lake Michigan features remarkable dunes that lie at the heart of a Chippewa legend.

Controversial tribute to the heavyweight champion boxer who grew up in Detroit.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

A glimpse at Walt Disney's vision for a "community of tomorrow," in miniature.

Electrical pylon in the shape of Disney's beloved mouse.

This impressive working clock made of 16,000 plants changes its flowers twice a year.

This Niagara Falls tourist trap is a world bright with neon and curiosities that will inspire love, hate, or a mixture of both.

This infamous prison has a store where you can buy goods crafted by incarcerated people.

Concrete strongholds stand guard over the Golden Gate.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

The key to turning shifting dunes into the green oasis of Golden Gate Park.

Depicting scenes of everyday life - and specific individuals - in Great Depression era San Francisco.

Built for an exposition in 1915, these horticultural displays have stood the test of time.

This museum is a music lover's introduction to the iconic venue.

A second generation sun-powered marvel lights up the night.

An historic and oft-filmed spot for musclebound iron pumpers on the Pacific coast.

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.

This quirky UFO-shaped curiosity is often mistaken for the airport’s control tower.