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

A plaque marks a former safe house on the secret route, now hidden next to a McDonald's.

Once America’s most beautiful army base, this abandoned military fort on the coast of Monterey Bay has been left to the elements.

From Coke II to Google Glass, this exhibit features some of the most spectacular commercial flops.

Swedish mice can dine at the Nuts of Life restaurant or take a date to the amousement park.

The romance of early commercial flight still fills this Art Deco destination.

The remains of a historic plantation nestled in between a parking lot and the rental car return at Reagan National Airport.

A mining town once rife with murderous disputes over its copious treasures now creates income as a popular spot for photo shoots.

The ghost town that ended up on Ebay.

One of the few remaining carousels built by master amusement park carver Charles I.D. Looff.

North America's largest accredited model railroad museum.

The old Route 66 town straddling Texas and New Mexico died along with the Main Street of America.

This stunning natural double arch, the largest in the Alps, went undiscovered until 2005.

A museum of the dime museum that features weird entertainments of yesteryear, from feejee mermaids to flea circuses.

People can't get enough of these adorable Japanese photobooths.

An alternate history park where the Union Army loses the war... to dinosaurs.

A Jenga-style cylindrical tower of books that appears to go on forever.

Moscow's other, lesser known kremlin is a fairytale-like cultural complex modeled after Old Russia.

The final resting place of up to 6,000 Confederate soldiers, the largest mass grave in the Western Hemisphere.

This wondrous waterfall rushing down a green-covered mountain wasn't discovered until 2010.

The Pennsylvania landscape depicted by a quarter mile of mosaics made from used road signs.

A well-preserved Ancestral Puebloan ruin tucked beneath a desert cliff.

A small window on Via Piella offers a lovely and rare peek at Bologna's lost canals.

Lemon Grove, California is known for its giant lemon...and mummified bodies.