One of the oldest used bookstores in the U.S. has been selling antiquarian treasures since 1825.

This narrow canyon has been carved by the river over thousands of years into spectacular and curious forms.

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

The massive machine creates cracking displays of indoor lightning.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

Those with a sharp eye can find the hidden image of a German Shepherd on the memorial's Mural Wall.

Two stone columns flank the grand Venice square, but there were supposed to be three.

A relic of FDR's brief foray into utopian urban planning.

The residents at this Yellowstone wildlife park will certify your cooler as "bear-proof."

An obsolete, vanishing traffic device warns Cincinnati drivers away from middle-of-the-road obstructions.

A 1,100-ton train fell through the floor in 1953. Workers got it patched up in just 72 hours.

One of the last remaining World War II Victory Gardens in the U.S. is quietly growing across from Fenway Park.

The rogue roots are gradually consuming some of the historic marble grave markers.

This small-town Connecticut restaurant gives each diner a free book from its vast library.

Plymouth's huge yet little-known memorial to the Pilgrims.

A derelict bit of infrastructure from the canal that once ran through D.C. is landlocked in the heart of the city.

The largest of the Fuji Five Lakes is home to an impressive swan population—some real, some with paddles, and one with an observation deck.

After a profound show of devotion for his master, a dog becomes the symbol of loyalty for an entire nation.

America's original house of worship for Spiritualism, the religious movement based on communing with the dead.

An easily overlooked stretch of ornate window fronts and gaslight lamps that could be right from the pages of Dickens.

Richard III supposedly disposed of his nephews' bodies here in an effort to seal his claim to the throne.

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

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