An abandoned Jazz Age dream home and con man's hideout in Death Valley.

More gold than anywhere else, ever.

A tribute to the Nirvana frontman hides beneath the bridge that was the singer's beloved hangout spot.

A plaque memorializes the Boston location of one of the largest nightclub fires in history.

The site of one of the strangest disasters in history—a wave of deadly molasses traveling at 35 mph.

A memorial to the firefighters who died in an industrial disaster is housed in a small public park.

A unique columnar residence built in the 19th century.

This former Masonic hall has been turned into an art project that uses even more metaphysical iconography.

Rising 30 feet in the air atop Quarry Hill, the Old Powder House is the oldest stone building in the state of Massachusetts.

This unassuming stone commemorates a condiment factory gone up in smoke.

Some believe this abandoned Brutalist masterpiece inspired George Lucas's Sandcrawler.

A taste of Middle Earth, in the middle of the Bayou City.

A flight of this "ghost staircase" has 40 steps on the way up, but only 39 steps on the way down.

The first ever diner included on the National Register of Historic Places is famous for its custard French toast.

Find out what it sounds like when doves cry at Prince's recording studio estate turned museum.

Sculpture garden and miniature golf course blend together in the oversized backyard of a Minnesota sculptor.

One of the earliest large-scale "hyper" roofs in the U.K. is now a derelict roadside attraction.

A mining town, now abandoned, was built in a canyon so narrow that the railroad ran right through the hotel lobby.

This observatory comes complete with three separate telescopes and a dedicated community of amateur and expert astronomers.

These sprawling mines once served as a source of plaster and today serve as a storage facility.

One lonely, modern pyramid has gone from corporate think tank to deserted boondoggle.

Marigolds, rosemary, Madonna lilies, and the Virgin’s Bower decorate this Massachusetts sacred garden.

These old stone ruins in the Oregon wilderness were once bathrooms and are steeped in legends of murder.

This delicate museum is devoted to the art and industry that once supported Cape Cod's oldest town.