In 1958, an MIT fraternity pledge laid down on this bridge and instituted a new, unique unit of measurement.

An interesting decoration on this historic site, this weathervane comes with as many legends as it does questions.

Millions of numbers carved in glass represent the tattoos forced upon victims.

The bears may be gone, but their old cages can still be found.

The massive machine creates cracking displays of indoor lightning.

One of the now-less-hidden floral gems of the "Emerald Necklace."

One of the oldest used bookstores in the U.S. has been selling antiquarian treasures since 1825.

A very classy 1920s-era bar right in Grand Central Station.

An abandoned textile mill that is now home to art and concerts.

The "Seinfeld" diner.

New Hampshire's first neighborhood is now preserved as a historic village with live action role players.

Enjoy dishes that founding fathers once ate at this Colonial Williamsburg pub.

The absurd creation is a compulsory destination for selfies in Buffalo.

Fittingly, America's museum of architecture is itself a magnificently designed old building.

One of only two commuter aerial tramways in the United States.

The fanciest public restroom in New York City boasts fresh flowers, art, and a classical music soundtrack.

The original toys that inspired the beloved children's stories are on display at the New York Public Library.

One of New York's best collections of pinball is hidden in a secret bar in the back of this laundromat.

Amid the bustle and noise of the Financial District hides a secluded garden oasis above the city streets.

One of the most enjoyable bits of history at Coney Island and “the most romantic ride in the world.”

The competition: breathe deeply as long as you can.

The first museum in the United States dedicated entirely to posters.

Avoid gangster interaction while window-shopping.

Dine like an American revolutionary at Colonial Williamsburg.