The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

This unique structure in suburban Austin is made up entirely of other people's castaways, and constantly changing.

Hidden in Central Park's Ramble is a troublesome cave buried just beneath the surface.

A pair of slides and a tree-lined stair corridor have been an urban oasis for nearly 40 years.

A DIY art gallery/music venue/lecture hall dedicated to video game culture.

Giant busts of 42 U.S. presidents are sitting in a field in Virginia.

The first declared National Monument in the United States.

Home to items never before seen by the public.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

A museum dedicated to the history and exploration of both popular music and science fiction.

Home of an evil witch famous within southern folklore.

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

Hellam Township is reputed to feature seven remote gates, which when passed through in the right order, open an entrance to hell.

The site of the climactic scene from the classic horror film is now a historic landmark.

The one-stop shop for all of your superhero (or evil arch-nemesis) needs.

A New York garbage depot holds a secret collection of weird and wonderful refuse.

Order scoops of pandan, lychee, and black sesame at this family-run institution.

Here, at the "world's longest art gallery," you'll find forty miles of ancient petroglyphs and pictographs.

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

Giant Redwood-themed cafeteria operates under the golden rule, "Dine Free Unless Delighted."

A Pythagorean funhouse that tries, successfully, to prove that math is the coolest thing ever.

This shop for all your super spy needs hides an educational secret.

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