Stuck in the arcade of Casa Isolani are three arrows of mysterious origins.

Legend has it this fountain built to symbolize the Pope’s power hides a strange secret concerning Neptune's manliness.

In the world's oldest university is a stunning 17th century anatomical theater carved from spruce.

Once a giant oak that served as the region's post office.

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

This grand gothic brewery has been pumping out suds for over a hundred years.

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

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.

This taxidermy horse was a Civil War hero.

An overlooked memorial honoring the local Washington residents who died in World War I.

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

Light bulbs, scrap wood, and tinfoil comprise this homemade throne of the gods.

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

Perhaps the most scandalous statue of America's first president.

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

The oldest continuously operating fish market in the United States.

This stunning blue and gold room changed cities twice before becoming part of the Smithsonian.

An Irish Memorial commemorating those who perished due to potato blight.

This beloved marketplace mascot poops money and grants good luck.

This elaborate towering structure was once famed for its revolutionary height.

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

This unconventional used book store was once in the news for the surprising act of burning books.

Experience the hysteria of a 17th century witch hunt through goofy reenactments and wax dummies that should probably be burned at the stake.

The only structure left with direct ties to the Salem witchcraft trials of 1692.