A secret rendezvous spot where John S. Mosby and his Rangers would meet to divvy up their loot after raids.

This 19th century granite fortification is one of the most well preserved forts in New England.

This Iron Age hill fort remained hidden until a series of storms revealed its history.

This former boomtown "island" is now submerged below Folsom Lake.

A seven-century-old jail tells a not-so-pleasant history of crime and punishment.

A small museum in this border city displays the contraband art that has been stolen back from smugglers.

The so-called "Bridge of Thighs" in Palm Springs allows nudists to discreetly cross the road.

The ghostly remains of an accidental sea.

Oldest building in California still in use.

This historic tower in the California desert promises visitors a "vortex of good vibes".

Catch a glimpse of the elusive Peninsular bighorns right off of the desert freeway.

The world's largest wooden trestle stretches across this desert canyon in Anza-Borrego Desert State Park.

A remote desert lookout offers unparalleled views of the California badlands for those who brave the trek.

A world-class observatory in the California desert.

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.

Stripes of flowers bloom each spring in a 50 acre rainbow of color.

This Pringle-shaped ledge makes for the perfect photo op.

The smallest Mexican land grant in California was given, and then taken from, a 19th-century teacher and nurse.

Giant nude woman of Tijuana is also the artist's home.

A Biblically-based Natural History Museum.

Tijuana's legendary jai alai or "basque ball" palace is now a massive music venue.

Educational foundation that teaches the powers of fourth dimensional physical properties.

Behind this beachfront shop lies a spectacular, colorful sea cave with an equally colorful past.

The Giant Lemon of Lemon Grove.