Once a strategically imperative naval base, portions of this Bermuda dock complex now serve cruise ships.

Hamburg's first legal sex work is relegated to a gated street that still does not allow pedestrian women.

This shop for all your super spy needs hides an educational secret.

This modest marker near Notre Dame identifies the very center of Paris.

This abandoned NASA launch site is now a memorial to a trio of astronauts who were killed there.

A building so large that it has its own weather.

Despite being made of a seashell mortar, the crumbling remains of this historic Florida mill are still standing.

The former home of the Nobel Prize-winning American writer is now home to dozens of six-toed cats.

A monument celebrating the idea of reaching inaccessible places.

This portion of a lovely Belize beach is infested with (harmless) sharks and rays.

Medieval torture techniques with a modern conscience.

These medieval skyscrapers dominate the skyline of this small Tuscan town.

Renaissance hospital featuring a rotating door into which unwanted babies were dropped.

A large grotto built in the 16th century amidst Florence's famous Boboli gardens.

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.

Secret refuge and museum of the Duke of Florence.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

This 17th-century street hidden beneath Edinburgh was once a breeding ground for the black death.

An old department store turned Nazi prison turned artist commune.

Hot Doug's "Hot Dog" Stand.

An enormous park-like oasis, full of famous Chicagoans’ graves.

This whimsical Oz-themed park had a wonderful impact on the surrounding neighborhood.

A giant bronze coil of feces is both a tribute to doggie defecation and a reminder to pick it up.

These pretty kitties killed and ate as many as 135 railway workers.