An easy-to-miss garden in Boston's North End honors the mother of JFK and others who lost children in WWII.

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

Since 1947, this living history museum has been providing an immersive look at life in Plymouth Colony.

Unlike other abandoned asylums this empty institution welcomes visitors, just don't go in the buildings.

No one really knows how these old hobby horses got here, but the herd keeps growing.

This site commemorates the former inn and restaurant where the chocolate chip cookie was first crafted.

Final resting place of a New Haven urban legend.

Before Nixon, "watergate" meant canals.

A heroic pigeon that, through a barrage of gunfire, delivered a message that saved over 100 lives in World War I.

There’s a hidden military meme engraved on the World War II Memorial.

The country's oldest continually-operated mini golf course lies hidden in plain sight, eclipsed by one of D.C.'s most popular tourist attractions.

A former major munitions plant that has been converted into a sprawling art space.

The world’s first penitentiary, meant to be humane, drove men insane.

A popular shrine where the Blessed Virgin allegedly appeared in 1830, displaying a holy armchair and two incorruptible remains of Lady Saints.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

France's most famous cemetery, with some of its most curious tombs.

The oldest stone house in Paris was built by its most famous alchemist.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

This elaborate towering structure was once famed for its revolutionary height.

Yo, Adrian!

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

An eccentric inventor's castle home with its own indoor weather system.