A luxuriant botanical garden below sea level.

Home to the deepest rift anywhere on Earth.

20,000 pieces in a Frank Gehry-designed building.

"Only the devil could play golf here."

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

This small section of the Sleepy Hollow Cemetery is rotten with famous authors' graves.

Life-size bronzes of the Grinch, Cat in the Hat, Yertle the Turtle, Sam-I-Am, and the Lorax—and the author himself.

Megachurch turned Catholic church comprised of 10,000 glass panes.

A little barn in the middle of the city preserving Hollywood treasures since 1985.

A small metropolis of Pueblo cave dwellings have been carved right into the hillside of this national monument.

At the tallest peak in Colorado, an electrifying mix of thin air, lightning, and rivalry.

Curious cave that stays a cool 56 degrees all year long.

A clone-tree in Washington Square Park sprung from seeds that went to the Moon and back.

This Arizona observatory is famous for investigations into Martian life, and as the place humans first spotted Pluto.

Earth's tallest volcano is sacred to Native Hawaiians, and home to a dozen world-class observatories.

A large instrument played by the wind.

An increasingly eccentric apartment building, topped with winged beasties.

Cemetery featuring rare glass-fronted columbarium.

What is the Thing?

The quiet canyon has a tumultuous history involving a doomsday cult.

The world's largest rose bush has literally outgrown the pioneer museum it was planted behind.

Beautiful natural falls where Satan once ruined a pot of beans.

Deep scars on the earth left by the Ice Age.

Miniature art that tells an enormous story.