The wood bears a hidden love note carved by a young Johnny Cash.

Two small markers remember the Alamo's feline protectors.

A collection of vintage liaison aircraft kept in flying condition and on display at an airfield in San Antonio.

The oldest active mini golf course in the U.S. has an elegant Art Deco style filled with lush tropical plants.

Legend has it the commander of the defenders drew a fateful line in the dirt with his sword just before the final battle.

The 40-foot-tall votive candle is the largest of its kind.

These boots are made for selfies.

A gorgeous garden oasis with winding paths, stone bridges, and a troubling history.

The world's largest underwater restaurant is submerged off the southern tip of Norway.

For this chef, an active volcano is his oven.

Once the central jail for Los Angeles, this building housed inmates like Al Capone, those arrested from the Zoot Suit and Watts Riots, and individuals imprisoned for their sexuality.

Legendary frontman of the Doors looms in this giant mural by famed Venice muralist, Rip Cronk.

Nancy Thompson's Home from "A Nightmare on Elm Street."

This brightly made over hotel hides decades of suicide, serial killers, and mysterious deaths.

Everyone remembers Laurie Strode from Halloween, but this is the house where most of the blood was shed.

The remains of the first punk club in L.A.

A look into the Church of Scientology's deeply unfavorable view of psychiatry.

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

The abandoned zoo enclosures offer a perfect place to experience the other side of the bars.

A library of rare occult books in Los Angeles.

The Boston square dedicated to the dark poet who was born nearby.

A collection of haunted objects and macabre oddities under one roof.

A medical facility that has been kept frozen in time.

A hidden network of subterranean passageways lies tangled beneath Indianapolis' bustling City Market.