This mile marker stands at the unofficial end of a highway built to defend the United States from a Japanese invasion during World War II.

The collection includes seven one-of-a-kind automobiles, vintage fashion, and more.

A morbid gateway to an Alaska town prides itself on the hunting history it represents.

Mind-blowing carvings and fantasy ice scenes grace the largest year-round ice environment in the world.

This frozen tunnel in central Alaska is both an engineering feat and a valuable climate classroom.

This fast-food outlet is the only space and UFO-themed McDonalds in the world.

A graveyard of bathyspheres and diving bells paints a weirdly accurate account of ocean exploration's rickety history.

This Chinese-style quartz sundial was saved in its final hour.

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

The lecture hall where Alexander Graham Bell first demonstrated the long-distance phone call.

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

A museum dedicated exclusively to the lore and history of ouija boards.

Experience the hysteria of a 17th century witch hunt through goofy reenactments and wax dummies that should probably be burned at the stake.

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

The grave of Mary Nasson is shrouded by witchy legends.

True to its name, this bouncy walkway may be the world’s smallest suspension bridge.

Maine's oldest diner also happens to win acclaim for its elevated comfort food.

For nearly 200 years the same family has harvested ice from a small pond in eastern Maine.

This candy-striped tower is the farthest east you can go in the United States.

An unusually designed bridge from the 1920s was built to withstand the tides and winds of Maine.

The world's largest rotating world.

When the town wouldn't allow the fast-food behemoth to build a new restaurant, they put one inside an 1850 home.

This tiny patch of arid sand sits in one of the greenest states in the United States.

The only remaining historic maritime signal station in the United States.