No one knows how this Pacific Northwest spruce tree came to have so many trunks.

Railroad officials in the early 1900s sought to spare travelers the sight of Roman soldiers’ private parts.

An overlooked tribute to one of the most important peace deals in American history.

This mysterious structure by the Washington Monument is a flood barrier designed to protect the White House against rising waters.

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

The early data processor factory founded in Washington for the 1890 U.S. Census went on to become IBM.

There’s a special club house at the top for the bell ringers.

Washington's iconic carousel has a nice piece of Civil Rights history.

Go take a picture with the inventor of the daguerreotype photographic process.

This poor little statue is the most vandalized memorial in Washington.

A museum cafe showcases Native American dishes and indigenous ingredients from across the Western Hemisphere.

This imposing Masonic temple a mile from the White House was the first public library in Washington, D.C.

A Civil War fort in the middle of Washington, D.C. has been swallowed by a forest.

People escaping slavery may have hidden inside a corpse vault.

This lonely waterfront memorial to the men of the Titanic was erected by the "Women of America."

A derelict bit of transportation infrastructure hidden in the woods.

Before Metro, Washington had a robust streetcar network—and you see the remains of this infrastructure if you know where to look.

A much-maligned monument to teetotalism.

A painfully obvious spy house sits right across the street from the Russian Embassy.

The ancient heart of Tunis is an enormous maze of narrow streets and alleyways.

For centuries young Thai men used this Giant Swing as a slingshot to heaven.

Towering at a height of over 30 meters, this turn-of-the-18th-century landmark is the tallest temple in Nepal.

Nailing a coin to this holy stump is just another way to ask the gods for relief from dental pain.

This historic square in Nepal is home to temples dating back to the third century.