California's own medieval Italian castle, authentic down to the 300-year-old iron maiden in the dungeon.

An alleyway plaque is all that remains of the independent Texas' envoy that forgot to pay their rent for over a century.

This serene oasis in an affluent Los Angeles neighborhood holds some of Gandhi's ashes and got Elvis into Eastern Philosophy.

The largest drain hole in the world.

A Japanese concept restaurant that feels like a party thrown by the monsters in your closet.

The oldest hotel in the world has been operated by the same family for over 1,300 years, even catering to samurai.

This strange seaside tower got its name from a wealthy eccentric who would hide coins among its stones.

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

Since 1874, this macabre collection has developed into a museum devoted to Scotland Yard's mementos of dastardly deeds.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

This controversial depiction of the "Founder of California" looks as though it was sculpted from mashed potatoes.

Working mining and drilling equipment demonstrate 150 years of energy history.