This spectacular track has run continuously since 1882.

The superstar of Cold War nuclear bunkers has been featured in countless films but is now barely operational.

This Colorado hiking trail provides a small gold mine of abandoned gold mines.

Despite being one of the most photographed vistas in the Rockies these twin peaks are rightfully known as the "Deadly Bells."

"Looks so real, it's scary!"

Once a mortuary that held the remains of Buffalo Bill, this Denver hotspot is now a death-fixated restaurant.

The largest self-built castle in the U.S., six decades in the making.

One man's vast collection of artifacts and ephemera from matchbooks and postcards to vintage neon signs and cars.

Canyon walls shrouded in ferns.

This Los Angeles animation studio is keeping the wonder of stop motion puppetry alive.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

A hotel and restaurant serving as the mecca of kitsch.

A library of rare occult books in Los Angeles.

A strange house built only at night, with rumored mystic inspiration.

A tiny theater hidden in an alley plays a constant stream of short silent films for anyone willing to peer through the peephole.

Medical and zoological curiosities for sale.

A 140-year-old castle with underground caves hidden in San Francisco.

World's largest collection of serial killer artwork and other macabre exhibits.

This Old West prison built into the side of a cliff was said to be inescapable.

The remains of the first public diamond mine in Arkansas.

This one-room schoolhouse in rural Arkansas dates to the 1920s, but looks like it could be the 1820s.

On the side of Arkansas' Great River Road stand the remains of a forgotten World War II POW Camp.

This quirky Arkansas wax museum does not shy away from the macabre and the grotesque.

A pair of giant roadside arrows are all that remains of a former Route 66 trading post.