This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

Medieval museum built over Roman baths that features famous tapestries of a lady and a unicorn.

The very center of Paris is surrounded by a bevy of strange good luck rituals.

With over 100 jam-packed rooms to explore plus elaborate tea services and events, the Mansion on O Street is a hidden treasure.

A girls' boarding school inspired by the Chicago World's Fair, once abandoned, now restored to strange and scenic glory.

The longest escalator in the Western Hemisphere takes over three minutes to ride down.

These massive mitts are made of 30 tons of devotional bronze.

An oil baron's wild paradise and the winner of an ill-fated air race.

A mysterious and terrifying public art goblin seemingly meant to inspire local legend.

Self-built house and sculpture park where the creator can still be seen in a glass coffin.

A tiny piece of the Moon is embedded in this stained glass masterpiece.

Home to items never before seen by the public.

A small triangle of DC grass is the final resting place of one of Sonny and Cher's songs.