These sub-farmland caves are home to a majestic stalactite known as the "Crystal King."

The only remnant of a small mining town is an abandoned railroad tunnel that is steeped in ghostly lore.

Abandoned former poorhouse, bible college, and haunted house in an Ohio hamlet.

César Baldaccini's iconic sculpture of a 40-foot thumb stands tall in La Défense.

Museum on French naval history, with magnificent figureheads, a historic diving suit, and a boat used by Napoleon.

This Parisian fountain is a little bit fantasy and a little bit nightclub.

A horde of stray cats rule in this secluded Parisian cemetery under a bridge.

This life-size replica of the Statue of Liberty's flame is also a tribute to Princess Diana by default.

The Sun King's military models, saved from the Louvre.

Despite being considered a thoroughly American sport, basketball's oldest surviving playing field is found in the basement of a Paris YMCA.

A mechanized clock where a man fights off a dragon, crab, and rooster.