Plans for this peninsula included houses, the United Nations Headquarters, and a nuclear power plant. When none of them worked out, it became an expansive park.

The last remaining attraction from Paragon Park.

Civil War Fort on an island in the Boston Harbor.

Overgrown ruins of a turn of the century island fort that sees very few visitors.

The oldest surviving wood-frame building in North America is still in the family.

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

This clock tower is all that remains of Bird Hall, constructed by one of the founding families of this Massachusetts town.

This candy-colored storybook village originated as a 19th-century Methodist campground.

Impossibly life-like natural history models created out of glass by a father and son.

One of the last remaining movie theatres in the country that features a rear-projection system.

This bridge was the birthplace of a unit of measurement based on a fraternity joke.

The headquarters of one of the world’s longest-running humor magazines bears a noticeable resemblance to a head wearing a Prussian helmet.

Three prestigious academic collections come together to create a world-class natural history museum.

Bouncing, delightful, mechanical art at the MIT Museum.

This stone complex marks the urban center of a lost civilization.

A bronze of the man in all his sinewy glory celebrates his longtime connection to the Ohio city.

The once highest point in China blends symbolic design with a kick of adrenaline.

With no menu and no sign, this 130-year-old taverna doles out affordable home cooking.

A sharp sculpture made of thousands of pieces of jagged glass.

The hallucinogenic center of the ancient world.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

Monasteries on rock pillars, once accessible only by frayed ropes.

A unique columnar residence built in the 19th century.

Ancient Peruvian fertility temple or modern money-making hoax? Either way these monoliths still look like penises.