Berthed at the Charlestown Navy Yard in Boston, "Old Ironsides" is the oldest commissioned warship still afloat.

The American Revolution was galvanized into serious action due to the tragic clash with British soldiers that occurred at this location.

Millions of numbers carved in glass represent the tattoos forced upon victims.

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

Recognized the world over as the home of the McCallisters in the 1990 movie "Home Alone."

Books bound in human skin and H. P. Lovecraft's letters are among a few of the treasures this library has to offer.

Hundreds of personalized inscribed planks make up this historic boardwalk.

America's first public lending library began with a gift from Benjamin Franklin.

Since 1947, this living history museum has been providing an immersive look at life in Plymouth Colony.

Downtown Minneapolis mixed art and function by turning some of their sewer covers into works of art.

After the musical legend's death, his memorial was mysteriously graffitied in gold.

A toweringly silly piece of modern art has been delighting locals since the 1980s.

One of the last remaining World War II Victory Gardens in the U.S. is quietly growing across from Fenway Park.

The often-overlooked ruins of one of the first buildings designed by famous landscape architect Frederick Olmsted.

Bouncing, delightful, mechanical art at the MIT Museum.

Rhode Island's tallest building bears a resemblance to the "Daily Planet" building and has been empty for more than five years.

The world's largest piece of copyrighted artwork.

From bench to vandalism to art, this silly prank seat was funny enough to become permanent.

One of the oldest used bookstores in the U.S. has been selling antiquarian treasures since 1825.

Ice cream stand, snack bar, and time capsule of milk conveyance.

Stand at the center of this lakefront sundial, and you'll become part of the timepiece.

Scary metal statues adorn some of the signature buildings of Burlington, Vermont.

This 38-drawer structure claims the superlative title, but it isn't the world's only giant filing cabinet.

Cryptid lake monster honored with its own monument.