A man-made island in scenic San Francisco Bay.

This one-block alleyway is stuffed with street art that is colorful, cultural, and intensely political.

The giant pair of sexy legs sticking out the window of this costume store have become its main draw.

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

A popular winter vacation destination for migrating monarch butterflies.

The abandoned personal amusement park of the King of Pop.

This former coal gasification plant found a curious second life as a popular public park.

California's largest steel arch bridge.

Hidden in the Santa Ynez Mountains off Highway 154, this tiny restaurant once served as a stagecoach stop.

A six-ton wedding present for the King of the Scots.

A vintage video game wonderland in downtown Reykjavik.

Clean, cold drinking water flows from a nondescript pipe in a roadside rock face.

One of the most unusual geological features, recognizable from a dozen hit movies.

Once thought to be the oldest living tree in the world, Methuselah was germinated before the Egyptian pyramids were built.

A massive hydrovolcanic explosion left a half-mile wide crater in Death Valley.

Twelve plaster figures inspired by da Vinci's famed painting haunt the desert landscape above a real-life ghost town.

Odd outsider art installations surround a Gold Rush-era ghost town.

These markers are used to document elevation changes around the famed dam.

A Norwegian-born sculptor created these soaring guardian angels at the entrance to Hoover Dam.

The second-largest gold nugget in existence, displayed in a Las Vegas casino conveniently named the Golden Nugget.

The so-called "Father of Las Vegas" had the city's first telephone installed in his office in 1907.

Marta Becket's hand-painted theater in the desert.

Alaska Natives have lived on this tiny isolated island in the Bering Strait for over 5,000 years.

The remote graves mark the mysterious deaths of four 19th century explorers.