The house that took a plunge into the facade of a museum.

The amazing wonder cabinets of a very rich Austrian archbishop.

An Amsterdam street lined with antique shops each one dedicated to a different obscure collection.

This city square is home to Amsterdam's oldest church and a statue honoring Dutch sex workers.

Paris' fabled purveyor of exotic taxidermy and natural history curios.

France's national museum of scientific and industrial instruments.

Once the tallest building in the world and the site of "the highest dinner ever held in New York" this building now holds the most expensive penthouse in the city.

This shifting North Carolina sand dune is an odd little desert surrounded by oceanic forest life.

Scenic mount trashmore, Virginia Beach's most curious waterfront still has a couple of secrets.

This phone booth-sized municipal building has been a piece of police property for more than half a century.

An 18th-century Spanish watchtower made entirely of seashell and concrete.

This Florida sinkhole hides a rainforest-like micro-environment in its depths.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

Thousands of tourists and residents in Cologne affix "love padlocks" on the Hohenzollernbrücke Bridge to symbolize their affections.

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

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

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

Macabre astrological automaton clock dating to the late 1400s.

Underneath this small church are 15,000 bones, arranged by an obsessive academic.

One of the oldest reform schools in the United States, home to wayward boys such as Merle Haggard, now abandoned.

Only hotel where you can legally launder money.

A nondescript building that's been functioning as a speakeasy for nearly a century and a half.

An unfortunate geological resemblance to Satan has labeled this Pasadena gorge as a passage to the underworld.

After starting as a whimsical tourist attraction that eventually found its way to ruin, these renovated canals offer a lush and exotic locale on the Pacific Coast.