A beautiful Gilded Age hotel in the White Mountains with surprising diplomatic history.

A gas station and a state sign commemorating the most famous claims of extraterrestrial abduction.

Even Henry David Thoreau found this glacial pothole irresistible.

Come for the gun-toting hillbilly madman, stay for the ice-cream loving basketball bears.

These towering spires and glowing walls are carefully crafted from hundreds of thousands of icicles.

This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.

The oldest surviving botanic garden in the United States.

America's first serial killer rests in anonymity.

This little-known Revolutionary War fort is supposedly haunted by the ghosts of its past.

A layered tribute to the work of mosaicist Isaiah Zagar.

Golden and naked, the figure that was once the highest point in New York is all that remains of the second Madison Square Garden.

Yo, Adrian!

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

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

A daily replay of the experiment that proved the rotation of the Earth.

A tour de force of a fountain, memorializing a man who loved fountains more than anything else.

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

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

An Irish Memorial commemorating those who perished due to potato blight.

Ant sculptures march up the side of what used to be an iconic spot in punk rock lore.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

Utopia and nostalgia mingle at the site of Bronson Alcott's ill-fated agrarian commune.

Mass Grave of 48 colonists killed in a raid by Native Americans and the French in 1704.