Breathtaking and huge 430 year old maps of Italy.

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

The Battle of Atlanta in 360 degrees, featuring a corpse that bears a striking resemblance to Clark Gable.

This colossal ancient jaguar sculpture was used as a vessel for the hearts torn from sacrificial victims.

A hotel and restaurant serving as the mecca of kitsch.

This stretch of beach along California's central coast is a busy highway for the largest seal in the northern hemisphere.

A massive volcanic plug is now a protected area that hosts a number of bird species.

A few iconic structures are all that remain of America’s first outdoor shopping mall.

These spectacular, symbolic serpents lie within the shadow of the Great Temple.

An artist's vision for connectivity spans seven continents and 16 countries.

A fake town founded by Western movie stars is now becoming a hip desert community.

A replica of the first public theater built in California.

Bits and pieces from the ill-fated Donner Party's winter cabins.

The now-abandoned tunnels were built for the transcontinental railroad on the route where the first wagon train entered California.

This Big Sur waterfall drops 80 feet directly into the Pacific Ocean, and inspired the hillside house up top.

The unbelievably opulent home built for an infamous newspaperman.

A house built from trash known as the poor man's Hearst Castle.

A chain of bells connect the California Missions and honor the legend of the "King’s Highway."

An alley covered with 20 years of bubble gum.

A remote crossroads honoring a fallen talent.

A trash dump made beautiful by nature's power.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

San Diego's most historic and haunted home.

Lemon Grove, California is known for its giant lemon...and mummified bodies.