This 19th century mansion façade adorned with immigrant patriotism is a symbol of Louisville’s history.

The oldest operating Mississippi River–style steamboat still navigates the Ohio River.

The only building in Louisville (hopefully) that contains two ancient holy skeletons.

The largest cemetery in Louisville is the final resting place of Col. Sanders and Muhammad Ali.

This railroad overpass is said to be home to a murderous goat-man whose very legend has led to very real deaths.

Before Nixon, "watergate" meant canals.

A portal into the bricked up canal that runs through the heart of Washington D.C.

This medieval Estonian tower provides access to a series of tunnels that have been home to soldiers, punks, and fine art.

This endearingly discomfited urinating statue commemorates the sneaky pees had by us all.

If you visit Santa's village, you can get your passport stamped to show you crossed into the Arctic Circle.

Roughly 17 million letters to Santa have found their way to this Arctic Circle post office.

Now a hotel, this former bank was the site of a robbery that spawned a psychological phenomenon.

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

Hidden in plain sight, Sweden's official ordnance datum is now abandoned.

A king's bloodstained shirt is among the gruesome collection of artifacts displayed below Stockholm's Royal Palace.

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

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

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

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.

An ancient Viking runestone hidden in plain view in Stockholm's old town.

Several cannonballs of mysterious origins decorate two buildings in Stortoget's main square.

Dine on food tied to Viking history and legend at this subterranean Stockholm spot.

A plaque marks the house in Stockholm where the French philosopher René Descartes lived up until his death.

A wooden street sign is the last remnant of this 400-year-old alleyway.