Turning night into day in Victorian-era Austin to thwart a serial killer.

This small stone building, the final work of a renowned artist, offers a peaceful environment with radiant, colorful glass windows .

A view-altering observatory at the University of Texas.

This simple frog painting created by musician Daniel Johnston embodies the spirit of Austin.

A popular swimming hole that hides one of America's most deadly diving spots.

Secluded amid upstate New York’s Adirondack Mountains lies this subterranean emblem of a nation on the brink of nuclear war. And it's for sale.

Three gardens with toilets and urinals filled with bright flowers started as a protest against zoning rules.

Lady LeWinDa Milkzalot showcases Lewis County's dairy farming heritage and boasts an impressive rotation of seasonal outfits.

This art center is way beyond your average pumpkin-carving operation.

This oversize piece of novelty cookware once cooked the largest pancake in the world.

The former home of a disgraced local priest now hosts a mysterious secret supper club.

An abandoned castle owned and ignored by Masons carries a cursed history.

The lost town of Neversink, sunk by New York City.

The dairy farm in upstate New York where nearly half a million people gathered for three days of peace and music in 1969.

These mouldering mansion ruins remember a time when the Catskills were nothing but luxury.

An abandoned dollhouse factory.

This stone gatehouse was once the entrance to a historic mountain resort, and it had a cameo in a cheesy cult horror movie.

This sculpture of a fisherman spent six years at the bottom of the Schuylkill River.

One of Philadelphia's largest murals resides hidden under this bridge.

A legendary boxing venue and ring featured in Rocky V.

One of the oldest of its kind.

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

This forgotten building was one of the few Philadelphia-area breweries to survive Prohibition.

A tour de force of a fountain, memorializing a man who loved fountains more than anything else.