The Cold War-era "underground Pentagon" is a sprawling subterranean hideaway for the Defense Department.

Time travel with sweets across history at this research-based candy store.

Franciscan monks created a facsimile of the Holy Land for North Americans who couldn’t afford the trip overseas.

Bizarre Cavern.

A cave on the Maryland border where civilians took refuge during the bloodiest battle of the Civil War.

A labor of love built by local hang-gliding enthusiasts, this ideal launch spot was outlawed by the authorities and has since been largely abandoned.

The Giant Lemon of Lemon Grove.

A Biblically-based Natural History Museum.

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

World's largest collection devoted to one fruit.

The ghostly remains of an accidental sea.

A giant knight, sex education, date shakes, and Jesus coexist happily in this Coachella Valley desert oasis.

This simple highway curve has become a comedic pilgrimage site.

Along a California highway is a kind of Jurassic Park made of metal.

A world-class observatory in the California desert.

Famous and forgotten figures lie beneath the faded headstones and decaying planks of wood.

Spend a day hanging out with domesticated Russian foxes.