Locals call this magical moss-covered walkway the "Emerald Path."

A glittering Thai Buddhist temple in suburban Pennsylvania.

This shrine to McDonalds' most iconic sandwich holds a 14-foot tall burger.

This secluded walking trail is a hidden gem of a Pittsburgh park.

A field of nothing but boulders which resembles a giant's gravel driveway.

A local prank turned town icon.

This Pennsylvania cave holds evidence of the oldest known inhabitants of North America.

This huge, disused viaduct is now a crumbling concrete underworld of covered in years of graffiti.

The iconic D.C. restaurant where the Cuban Missile Crisis was negotiated, now a Walgreens.

Bar full of oddities, specimens, artifacts and homages to the great dime museums of the past.

It was once the base for a series of domestic terror attacks.

America's Most Wanted's set resides in this tribute to the history of crime and punishment.

The preamble to the U.S. Constitution written entirely from vanity license plates hangs in the Smithsonian museum.

The abandoned coal loading dock is a canvas for unsanctioned art.

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

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

A historic covered bridge is but one example of an oddly prevalent American urban legend.

A quiet, gothic haven nestled between Pittsburgh's Squirrel Hill and Point Breeze neighborhoods.

This lush forest valley was once mined for lumber to the extent that it was once nicknamed "The Pennsylvania Desert."

This hidden gem of a garden has one of the only surviving Victorian ferneries in America.

The oldest farmer's market in America is so ancient it was approved by the King of England.

When the Austin Dam failed it destroyed much of Austin...and then it failed again.

A failed piece of Orientalism has become the proud symbol of a community.

The universally beloved children's television figure is interred on a high hilltop in one of western Pennsylvania's oldest cemeteries.