The most visited, and possibly most controversial, museum in Germany.

Thailand's distressed elephants find peace at this Chiang Mai sanctuary.

Walk through depictions of the torture inflicted on those who go to Buddhist hell.

The Battle of Atlanta in 360 degrees, featuring a corpse that bears a striking resemblance to Clark Gable.

A curious whirlpool formation supposedly capable of entangling or engulfing branches, tree trunks, or whole rafts full of hapless tourists.

Scattered around Atlanta are little doors with big charm.

Knoxville’s architectural icon was the symbol of the 1982 World’s Fair, even catching the googly eye of Bart Simpson.

At 135 years old and counting, this historic print shop is heaven for poster nerds and music buffs.

The hotel where Martin Luther King Jr. was shot is now a museum dedicated to his work.

Every day a troupe of pampered water fowl walk the red carpet to their favorite fountain.

Better known as the "Body Farm," this unique research facility has been studying how human bodies break down since the 1980s.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

One day a year it is legal to jump off of this astoundingly tall bridge that spans an Appalachian gorge.

The 5.5-mile ring of steel posts around the Capitol Building is one of the largest (and most uniform) of its kind in the world.

Look closely and you’ll notice that the color changes a third of the way up the tower.

A derelict bit of infrastructure from the canal that once ran through D.C. is landlocked in the heart of the city.

While most wind tunnels test scale models, the "Cave of Winds" was large enough for actual airplanes.

A three-story tower of books about Abraham Lincoln is one of the more unusual monuments to the president.

A heroic pigeon that, through a barrage of gunfire, delivered a message that saved over 100 lives in World War I.

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

The national park was once a plantation estate.

The "lovely red Vega" of the legendary record-settling pilot.

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

The most decorated dog of World War I is preserved in the Smithsonian.