Final resting place of a New Haven urban legend.

An abandoned Depression-era zoo hidden just off the highway.

This historic park site contains the last remnants of a once bustling canal system.

Eccentric concrete mansion and museum designed and built by hand from the inside out.

A toxic ghost town sitting atop a massive coal fire.

A pride of the state, this working museum crafts pottery mosaics in the style of Pennsylvania's earliest European settlers.

A winding, cliffside stretch of road overlooking the Delaware River.

The headquarters of the Fraternitas Rosae Crucis, complete with Rosicrucian pyramids, all in the Pennsylvania woods.

A mine fire has been burning under the deserted town since 1962, but this church is still going strong.

Oldest existing wire suspension bridge in the United States.

Once the world's largest reinforced concrete structure, this abandoned bridge now beckons urban explorers.

In the early 1800s, surgery was also a show.

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

A train station that was abandoned by the coal industry and was later converted into a cocktail bar.

A gazebo that inspired the fifth episode of the "Twilight Zone" still stands in the creator's hometown

Ant sculptures march up the side of what used to be an iconic spot in punk rock lore.

This might just be the TARDIS of bookstores.

An Irish Memorial commemorating those who perished due to potato blight.

Century-old shop, specializing in Occult products.

America's first serial killer rests in anonymity.

A clone-tree in Washington Square Park sprung from seeds that went to the Moon and back.

Mural made of 100,000 pieces of hand blown glass, and until recently, the largest glass mural in the US.

The last of Philadelphia's wood-paved streets is now a landmark of terrible engineering.

One of the oldest log cabins in America is one of the last of its kind this historic Swedish dwelling remains a piece of living history.