Once America's longest-manned military fort, now an abandoned hulk.

A former insane asylum despised by Nelly Bly and Charles Dickens is now fashionable apartments.

The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.

Hidden in plain sight on a pair of Manhattan subway tunnels are a pair of public instruments that sing to each other.

A terrific purveyor of natural history objects and curios.

A faux European lane smack dab in downtown L.A.

Historic marionette theater features thousands of handmade puppets and free cups of ice cream.

The private clubhouse for the members of the Academy of Magical Arts.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

Fourteen curious and controversial white bunnies sit in a circle near Newport Beach City Hall.

This expansive bridge in the Canadian wilderness was originally just built for friends.

The world's largest rotating world.

This small-town pizzeria won the Hollywood lottery.

The ancient past meets the retro-future at these dinosaur tracks that are protected by a geodesic dome.

This small-town Connecticut restaurant gives each diner a free book from its vast library.

A take-out restaurant that only serves cuisine from countries with which the United States is in conflict.

A model of a dinosaur that was named for Andrew Carnegie stands outside the museum that also bears his name.

The only way to see Pittsburgh is from the top of this lookout point, just like the ancient members of the native peoples did.

There aren't too many operational funiculars around, but Pittsburgh has two!

The largest university building in the West is a gothic masterpiece containing dozens of theme rooms based on different countries.

The United States’s oldest funicular railway glides up and down a steep Pittsburgh street.

A restored Pittsburgh house of God has been converted to a marvelous house of suds.

Found art has transformed this Pittsburgh neighborhood into a psychedelic dream.

A New England curiosity cabinet, one hundred years on.