This beautiful grotto is one of those places where you can't believe you're just outside Austin.

An emerald-green grotto just a short trip from Austin.

The only cave in Louisiana has played host to a state's-worth of clandestine activities.

$10,000 won in a poker game in 1884 allowed James Draughon to build this intriguing home.

A Victorian mansion, painstakingly reproduced to appear just as the the Munster's family home did on TV.

From a supper club to a gay bar to an HBO shooting location, this 125-year-old Victorian mansion has lived many lives.

This collection of vintage signs reflects the long and colorful history of this Arizona town.

The fictional star of "Breaking Bad" is memorialized with a real-life gravestone in his hometown.

A beautiful red-faced slot canyon in northern New Mexico.

On the edge of the Valles Caldera National Preserve, these rock formations create an eerie landscape.

Deadly airliner crash preserved for those willing to climb and pay respects.

This collection of neon icons is preserving Arizona's history, one sign at a time.

An off-the-beaten path cave with an underground lake.

One of the most extensive and well-preserved collections of dinosaur footprints in North America.

The eroded core of an ancient volcano is now accessible by a short hike.

This historic national park is covered in the stunning ruins of red rock pueblos.

A stealthy Apache hideaway that became the haunting site of a mass grave.

Eons ago, a rushing lava river formed this pristine passage through solid rock.

The wreckage of a deadly bomber plane crash can still be found near an Arizona peak.

Ancient pueblos built into the base of a natural canyon wall.

Although now a decaying ruin, this stone cabin's history includes several notable figures.

On the outskirts of a reborn ghost town, a decaying post office remembers the bad old days.

A self-built castle made by a mysterious man.

This 40-room dwelling tucked within a cliff was built by the basin's prehistoric residents.