These two monoliths have stood at the entrance to the neighborhood since the days it was called "Hollywoodland."

It should come as no surprise that the best view of the Hollywood sign is from Batman's lair.

Instead of hoofing it up steep stairs, residents can hitch a ride on this private lift.

The ruins of a 19th century shelter run by the Independent Order of Odd Fellows.

This otherworldly church spire reaches up toward the heavens.

400 million-year old limestone caverns nestled in the Ozarks served as shelter and a hideout for cultures throughout North American history.

The history of the treatment of mental illness, illustrated in all its gory detail, and housed in an asylum.

Undone by Prohibition, this abandoned brewery-turned-flour mill is now ready for its third act.

This unconventional used book store was once in the news for the surprising act of burning books.

A natural formation that resembles a camel resting in the New Mexico desert.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

This constitutionally sound Muffler Man harkens back to the days these attractions were a must-see.

A sculpture made of 10 Cadillacs as a monument to the "Golden Age" of the American automobile.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

Knoxville’s architectural icon was the symbol of the 1982 World’s Fair, even catching the googly eye of Bart Simpson.

This Italianate Villa-style castle is pretty to look at, just keep off the private property.

A magnificent church designed by world-renowned architect, Frank Lloyd Wright.

A stratovolcano located in the south of Iceland, with a long history of charted activity and a rich mythology attached.

Inside this Icelandic greenhouse, geothermal energy keeps tomatoes warm and growing.

If a glacial river suddenly diving into a sheer chasm via a dramatic, multi-stage waterfall isn't peak Iceland, it's certainly close.

A charmingly eccentric magma chaser presents his complete history of the island's eruptions since 1947, in cinematic form, just for you.

A formerly glacier-tipped volcano that inspired none other than Jules Verne.

This mountain fissure hides a secret path to a secluded mossy grotto within the rock itself.

This black church sits alone among a field of lava rock.