It houses the remains of a 17th-century version of the Titanic.

This small museum nestled inside a souvenir shop is dedicated to Sweden's most well-known toy.

Stockholm's deepest subway station is also a stunning ecological wonder.

Spend your honeymoon where the Devil had his wedding.

The Guardian of Tallinn.

Stockholm's narrowest alley is barely over two feet wide.

It is said that each of the white stones in the red facade of this medieval house represents the head of a murdered Swedish noble.

Stockholm's tiniest statue is of a small boy looking at the Moon.

A 130-year-old urinal is the oldest of Stockholm and perhaps all of Sweden.

Stockholm's decidedly unique public transit system has doubled as the world's longest art gallery for decades.

This insurance company building reminds customers that witches, bears, and gnomes are out there, best be insured.

The alley connecting two of country music’s most historic venues has a rich history of its own.

Legend tells how a Spanish soldier disappeared from this isolated sentry box without a trace.

A magnificent waterfall nestled in the heart of the El Yunque National Forest.

This tiny home was originally a narrow alleyway.

This bleach-white graveyard overlooking the ocean is accessed through a tunnel.

The bat-covered home of one of the world's most popular brands of rum is located on a tropical Art Deco campus.

This limestone cave offers an incredible view of the Río Grande de Arecibo valley.

A detailed pachyderm supports Rome's smallest Egyptian obelisk.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

The deepest metro station in the world.

Get past the gatekeeper's apartment and enter an elaborate hoax of a restaurant with a Masonic feel.

A reconstructed medieval gateway that was the magnificent entrance to the capital city dating back to 1037.

This distinctive Crescent City tradition dates back to the days of horse-drawn carriages.