This ominous Albanian fortress houses tanks and downed planes as a reminder of their victories over Western imperialism.

Ant sculptures march up the side of what used to be an iconic spot in punk rock lore.

Frida Kahlo's childhood home, now a museum of her life and works.

One of the oldest living oak trees in the Southeast.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

This rare triple-jurisdiction drawbridge passes through Virginia, Maryland, and Washington, D.C.

This brick-lined pedestrian walkway was once a railway tunnel used during the Civil War.

A former major munitions plant that has been converted into a sprawling art space.

A home that witnessed Civil War combat on the Sunken Road has the battle scars to prove it.

This war hero's old shop remembers the fine line between medicine and quackery during the Revolutionary War.

The Kirkland Monument remembers a selfless Civil War hero who braved the battlefield to give water to his dying enemies.

The resting place of a Civil War celebrity's amputated limb.

This concert pavilion on the shore of the Great Salt Lake has been destroyed by fire, water, and disinterest but keeps coming back.

A tiny monument to the unsuccessful attempt by Thomas Jefferson to place the prime meridian in Washington.

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

A much-maligned monument to teetotalism.

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

The beloved statue at the National Academy of Sciences is oh so inviting to sit on.

There’s a hidden military meme engraved on the World War II Memorial.

On the Fourth of July this area will transform into a Pompeii-like storm of falling embers and ash.

Decades before the scandal, this staircase on the river was a literal "water gate."

Those with a sharp eye can find the hidden image of a German Shepherd on the memorial's Mural Wall.

"Polynesia on the Plains."

This little-known collection holds everything from "Dracula" notes, to the manuscript of "Ulysses," to the forged works of Shakespeare.