A morbid secret lies hidden within the beautiful walls of the Boston Athenaeum.

This small glass cube is a peaceful out-of-the-way sanctuary at the busy airport.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

This giant Boston statue of Mary is standing on a globe to show her power over the universe.

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

"Mock all and sundry things, but leave the saints alone."

Berthed at the Charlestown Navy Yard in Boston, "Old Ironsides" is the oldest commissioned warship still afloat.

The American Revolution was galvanized into serious action due to the tragic clash with British soldiers that occurred at this location.

One of the now-less-hidden floral gems of the "Emerald Necklace."

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

The Boston square dedicated to the dark poet who was born nearby.

An enormous, inside-out glass globe built in 1935.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

On the Oregon coast there is a natural hole that seems to be draining the sea.

Most-visited and most-photographed slot canyon in the American Southwest.

A collision of human error and natural geothermal pressure created this rainbow-colored geologic wonder.

World's first "penitentiary," meant to be humane, drove men insane.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

World's largest collection of serial killer artwork and other macabre exhibits.

A psychedelic labyrinth on the San Francisco bay.

During prohibition, corrupt city officials ran drinking dens under the streets of Downtown Los Angeles.

Japan's corrupt-mental-institution themed restaurant offers diners a chance to eat inside of filthy cells.

Curious onlookers have suspected this strange structure is a secret government base.

Barbies stare from the walls, sit on the tables, and even pop out of cakes at this quirky cafe.