This nondescript tunnel has been featured in a number of iconic movies, from “Roger Rabbit” to “Back to the Future.”

This forgotten Frank Lloyd Wright house is an architectural marvel at the end of a sleepy residential street.

A common entry point to the Griffith Observatory trail holds its own wonders.

After starting as a whimsical tourist attraction that eventually found its way to ruin, these renovated canals offer a lush and exotic locale on the Pacific Coast.

Left untouched since a double murder-suicide in the 1960s, Los Feliz murder mansion remains a neighborhood mystery.

Fourteen curious and controversial white bunnies sit in a circle near Newport Beach City Hall.

This strange seaside tower got its name from a wealthy eccentric who would hide coins among its stones.

According to legend it was a nap taken under this tree that kicked off the California Gold Rush.

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.

Though it was originally dedicated to the Hindu god Shiva, Baphuon was converted to a Buddhist temple in the 15th century, complete with a massive hidden statue.

A secluded, little-known temple hidden amid the dense jungle.

A small 12th-century temple surrounded by waters believed to have curative properties.

Hoax, mistake, or evidence of dinosaurs in human times?

This Cambodian riverbed is covered in ancient Hindu carvings both above and below the waters.

A battle between nature and architecture in the Cambodian jungle.

A full-scale sculpture of a mermaid and baby grand piano hidden underwater by David Copperfield.

This historical swimming pool near Miami is emptied and refilled each day with naturally filtered water.

Home to a vast collection of The Wizard of Oz memorabilia and the site of an infamous theft.

A stone face watches over the river.

17,400 lbs., 12 feet in diameter, and 29 years in the making.

Storybook cottage in Beverly Hills was once the site of 1920s silent film studio, affectionately known as "The Witch's House."

One of the richest places in the United States has a cursed street.

Oldest building in California still in use.

Most famous work of one of Frank Lloyd Wright's sons.