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

The legendary building that needed ghostly approval before being built.

The final resting place of a space program monolith.

San Francisco's newly reopened hands-on science museum.

A still functioning vaudeville carousel that has operated for over a century boasts a colorful menagerie and past.

A massive volcanic plug is now a protected area that hosts a number of bird species.

An alley covered with 20 years of bubble gum.

A charming desert roadside bakery that produces 10 times more bread daily than it has residents in its town.

Quite simply the largest tree in the world (by volume).

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

Towering basalt columns, a creation of fire and ice.

Standing in a state of "arrested decay," this ghost town allows for a detailed peek into Gold Rush life in an unusually harsh climate.

A collection of 20th-century automata, penny arcade games, and musical contraptions.