The world's oldest hologram gallery and the labyrinthine laser laboratory of a holography pioneer.

This geothermal hot spring hides beneath a slowly growing mineral dome.

A reproduction of earth's many biomes.

A museum dedicated to the alleged Roswell Incident.

One of the world's oldest and most massive living organisms is a grove of quaking aspens.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

Stepping away from the glitz of mobsters and casinos to learn about the other history of Vegas.

A hand-built folk art installation covered with messages of God's love.

The largest puppetry museum in the United States houses the world's most complete collection of Jim Henson artifacts.

This Los Angeles animation studio is keeping the wonder of stop motion puppetry alive.

Seattle's own bad art museum located inside Cafe Racer.

This spa theme park lets its guests take a dip in pools of coffee, wine, or ramen broth.

One of the dwarven trees dates back to 1625 and survived the Hiroshima bombing.

This lab's maddening silence is good for business but bad for sanity.

A special shop catering to the needs of things that go bump in the night, and also helps kids become writers.

One person's lost luggage is another person's treasure.

A look into the Church of Scientology's deeply unfavorable view of psychiatry.

A floating cat sanctuary on an Amsterdam canal.

A book collector's dream, this Toronto bookstore has the world's first "Biblio-Mat," a random book vending machine.

The world's only international cryptozoology museum is host to an unrivaled collection of mysterious objects.

A haunting collection of the vanished and disappearing natural world.

Olfactory delights in San Francisco's Botanical Gardens.

The remains of a failed attempt at medieval nerdery are hidden deep in the woods of Virginia.

A tongue-in-cheek arcade where the games are based on everyday life.