Mysterious ancient boulder carved with petroglyphs in the mountains of Western North Carolina.

This road in the Great Smoky Mountains was supposed to assuage a displaced community, but ended up a $52 million dead end.

Hidden amid the old-world charm of Savannah is a museum dedicated to the world of oddities and criminal history.

Only through the lens of a microscope can visitors see the true treasures inside this museum.

These ruins are all that remain of what a Spanish barrack that likely housed a quarry overseer, masons, and stone cutters involved in the construction of the Castillo de San Marco.

This historical art colony is adorned with thousands of hand-carved concrete sculptures in the Mayan Revival style.

Hidden in the plaza next to a pizza shop is an amazing little oddities shop.

Off the Florida coast, a whimsical world of marine sculptures are revitalizing coral reefs.

This mass grave for victims of a massive hurricane remained hidden until 1991.

This historic site situated in the Northwood shores neighborhood houses the remains of a forgotten town.

The oldest house of worship in Palm Beach has a wonderful tropical garden.

Grab a slice of pizza next to the remains of the "human monkey" who ran for mayor.

This grove was planted more than a century ago by the War Mothers of World War I.

Baltimore's first skyscraper may be home to the inspiration behind pulp fiction's most celebrated bird.

A small 19th-century graveyard tucked away in the middle of a suburban neighborhood.

Wedged between two sets of row houses is an awkwardly located family graveyard.

Once a thriving business district, this former shopping area is now an urban ghost town in the heart of the city.

Baltimore's classic clock tower was once topped by a rotating, 20-ton medicine bottle.

America's first nuclear-powered merchant ship is now a time warp to the atomic age.

Once America's tallest structure, now a Baltimore landmark.

At this former Prohibition speakeasy, electric birds signaled the arrival of hooch.

A monumental statue of RCA's mascot now sits atop a historical society roof after a life of moving around.

The design of this historic domed church was influenced by Thomas Jefferson and intended as a statement of religious freedom.

A faded sign from the 1920s remembers Baltimore's resistance toward banning alcohol.