No one knows the origins of the mysterious stone ruins discovered on a hillside in Halifax.

Commercial airplanes land mere feet over the heads of sunbathing beachgoers on this tiny island.

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

A bronze plaque at an intersection in Hoboken marks the place where the game of baseball first took shape.

This evocative New Jersey statue memoralizes the Polish victims of a Soviet massacre.

A simple plaque remembers an act of WWI terrorism that obliterated an island and forever scarred the Statue of Liberty.

On the Hudson resides one of the largest clocks in the world.

Hidden in plain sight on the Hudson River is an abandoned train station where nature has taken over.

The Old Courthouse takes visitors on a captivating trip through St. Louis' timeline.

This fully intact Neoclassical-Greek Revival style firehouse operated until 1938.

I Street Bridge is the heaviest swinging center bridge in the United States.

The California capital city once stood 10 feet lower than it does today.

The ruins of the castle that chemicals built.

Acres of natural wonders left behind by a socialite-turned-gardener.

The oldest standing structure in downtown San Diego.

A hotel and restaurant serving as the mecca of kitsch.

A massive volcanic plug is now a protected area that hosts a number of bird species.

The unbelievably opulent home built for an infamous newspaperman.

Offering commanding views of the California coastline, this restaurant was a hub for the artists and bohemians of Big Sur.

Life in this isolated, hilltop lighthouse was lonely, but it sure was lovely.

One of the most elaborate displays of Jellyfish is on display at the aquarium.

The oldest U.S. Government building in California, and it's State Historic Landmark #1.

California's own majestic geyser is powered by a subterranean volcano.

The fossilized remains of ancient California redwoods.