A layered tribute to the work of mosaicist Isaiah Zagar.

Gladiators once walked this ancient, subterranean passage.

These unusual houses look like giant boats that washed ashore on a residential street.

A couple turned their front yard into an artistic masterpiece.

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

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

A miniature train theme park, free to the public, laying at the base of the Santa Monica Mountains.

A classic American barn that was the home of a classic American television star.

Named after a bandit and the star of several Hollywood prehistoric landscapes, these sandstone formations are a historical part of the Los Angeles natural landscape.

Each year these high desert hills are absolutely covered with poppy flowers in a surreal show of nature.

Finale of "William Tell Overture" can be heard as drivers pass over grooves in the road.

The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.

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

The world's first motel is now an administrative building for an apple farm.

A simple statue outside a California Amtrak station honors the overlooked contributions of the "silent spikes."

An alley covered with 20 years of bubble gum.

A hotel and restaurant serving as the mecca of kitsch.

Thousands of migrating monarchs overwinter clustered amongst the eucalyptus trees.

This bug-eyed water wheel uses the power of the Sun to clean up Baltimore Harbor.

Dozens of feral felines rule a segment of Hollywood's only graveyard.

Resting place of Hollywood's immortals is also site of summer film screenings.

The man who voiced Bugs Bunny, Daffy Duck, Porky Pig, and more has a headstone reading, "That's all, folks!"

This unlicensed collection of fast-food memorabilia sits on the site of the first ever McDonald's restaurant.

The future of roadside attractions is this sci-fi soda mecca that is home to a 66-foot tall neon pop bottle.