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

Ride the subways of yesteryear.

This little museum is built on a theater that was once a wildly elaborate speakeasy.

A hands-on traveling collection of the innovative devices of yesteryear.

New York's oldest magic store.

A tiny museum housed in a New York freight elevator specializes in the "overlooked, dismissed, or ignored."

A terrific purveyor of natural history objects and curios.

Commemorating the 1948 creation of the Jimmy Fund, a Boston-based cancer charity.

A memorial to Chinese freedom in the city where American freedom was born.

A school used as a model for public education across the country.

Statue commemorating the use of ether in anesthesia.

A mysterious stone embedded at the base of a historic Boston building.

This nearly 200-year-old restaurant's history includes an exiled French prince, JFK, and a very hungry Daniel Webster.

"Mock all and sundry things, but leave the saints alone."

The last street in Pittsburgh that's paved with wood.

House of vintage taxidermy and Steampunk sculptures in a quiet Pittsburgh neighborhood.

Dim sum, served in a grand old theater.

Birthplace of America's first documented serial killer.

New Hampshire's most beloved war hero lived out his retirement in this peaceful homestead.

This store also houses a museum dedicated to the history of these small, historic community shops.

The 92-foot-tall structure is based on the aircraft that carried the first Americans into space.

This New England drive-in was built to straddle the border between two states.

This small museum is an eccentric shrine to boyhood in the 1960s.

The largest arcade museum in the world chronicles the golden age of video games which ended promptly in 1987.