The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

The crumbling structure is a rare surviving relic of the area's bygone mining industry.

A cemetery housing wild west legends in South Dakota.

A bronze sculpture in the heart of Portland represents Maine’s most defining industry.

The only remaining historic maritime signal station in the United States.

This 1,700-pound edible sculpture is way better than your average chocolate mousse.

This sculpture dedicated to a pioneering labor unionist and civil rights activist is located inside a busy Boston train station.

This plaque is dedicated to a historic hotel’s Canine Ambassador and the subject of two children’s books.

This historic sculpture from the 16th century is even older than the city of Boston.

This bronze sculpture was inspired by a photograph of Martin Luther King Jr. and his wife embracing after he won the Nobel Peace Prize.

This bridge over D.C.'s Rock Creek Park is sometimes called the "Buffalo Bridge" because of its four buffalo sculptures, which were cast from a single piece of bronze.

Coins and medals straight from the mint await visitors to this shop in the nation's capital.

When it comes to handsignals (and colonialism) rock always beats scissors.

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

The actual model from the original "Star Trek" series is now on display at the National Air and Space Museum.

The oldest continuously operating fish market in the United States.

The most accurate timepiece in the world.

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

If it wasn’t for a real estate agent with a penchant for old-school arcades, this hands-on collection of nostalgic flipper machines might never exist.

Once a safe haven for Black patrons and performers—including Billie Holiday and Duke Ellington—during the Jim Crow era, portions of this nightclub and motel have been restored to welcome a new kind of visitor.

This maze-like, oceanfront gift shop—the nation’s largest— has been serving kitsch to the Myrtle Beach community for over 80 years.

The imprints of astronaut Charles Duke’s moon boots live on at Myrtle Beach’s official South Carolina Hall of Fame.

It may take some time to locate, but it's sure to warm even a heart of stone.

The graffiti-covered remnants of a former triangulation station are balanced precariously on this California peak.