This spectacular dome managed to survive after being bombed in World War II, in an event known as the "Miracle of Mosta."

The oldest platform carousel built in the United States continues to delight children in Martha’s Vineyard.

The largest collection of historic military firearms in the United States.

This amazingly preserved Doric temple was abandoned before it was ever completed.

This Stone Age solar temple aligns with the sun on each equinox and solstice.

Tourists to the mountaintop Sicilian town often overlook its ancient fortifications.

A mysterious ancient elephant said to possess magic powers is now the symbol of a Sicilian city.

"Stairs of the Turks", a chalky white cliff eroded conveniently into stairs, allowing for easy pillaging.

The park is home to the United States's only still-operating Dutch windmill.

The hill that gave the Massachusett tribe, and later the state, its name.

An unexpected Easter egg lurks in the background of a cherub wall relief at the Breakers mansion.

Soaring over the Niagara Whirlpool since 1916.

This impressive working clock made of 16,000 plants changes its flowers twice a year.

Staten Island's original central park is the former home of the city water supply as well as thousands of immigrant graves.

The walls of America's oldest masonry fort famously "swallowed" cannonballs.

An eccentric priest's tribute to George Washington, this chapel tells the story of the American Revolution.

North America’s largest collection of horological devices and home to a colossal clock with a dizzying array of features.

An outlandish shoe shaped house built by an eccentric millionaire.

With nickel-steel armor and three-inch thick bullet resistant windows, FDR's train was a rolling fortress.

One-time winter retreats of prolific inventor Thomas Edison and his friend Henry Ford.

Many people don't realize there’s a lot going on in—and below—the world’s tallest triumphal arch.

Five sultans and their families rest in eternal splendor, teeming with overlooked beauty and drama.

A lone tower rises above the cliffs in a city park, offering fantastic views of the Connecticut landscape.

An abandoned gun-funded 19th century utopia.