No monkeying around, this fountain was really named after the classic sci-fi film.

The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.

The oldest surviving bridge in New York City, which reopened to pedestrians in 2015.

Millions of numbers carved in glass represent the tattoos forced upon victims.

Historic Hull Street was actually the first street with a proper name in the Boston area.

A mysterious stone embedded at the base of a historic Boston building.

From bench to vandalism to art, this silly prank seat was funny enough to become permanent.

Ice cream stand, snack bar, and time capsule of milk conveyance.

Narrowest house in Boston.

This impressive Boston holy house is the American mecca for Christian scientists.

This area was once known for being a lawless haven for rough-and-tumble sailors, earning the maritime-themed nickname "the black sea."

This massive tea kettle was once a promotional stunt for the Oriental Teashop.

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

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

Two thousand artifacts from around the world collected by one woman who loved to travel.

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

The bears may be gone, but their old cages can still be found.

The often-overlooked ruins of one of the first buildings designed by famous landscape architect Frederick Olmsted.

Ralph Waldo Emerson spent two years living here decades before it became a Frederick Law Olmsted-designed park.

A beautiful Victorian-era cemetery, complete with a miniature village.

This memorial complex contains several mass graves for victims of the Siege of Leningrad.

Statue in Salem of the woman who starred as the witch Samantha in the sitcom "Bewitched."

The only structure left with direct ties to the Salem witchcraft trials of 1692.

A quiet memorial marks the spot where the victims of the Salem Witch Trials were executed.