A nursery specializing in strange and beautiful succulents and cacti.

A regular looking rock with an unbelievable history.

Golden Gate Park's historic collection of plants.

World's largest collection devoted to one fruit.

Life in this isolated, hilltop lighthouse was lonely, but it sure was lovely.

The hidden jewel of Disneyland: a members only playground for the Disney elite.

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

Once strictly off-limits, this lower level housing curious and priceless vehicles of the Petersen Automotive Museum is now open to the public.

An optical illusion found amid a logged redwood forest.

Inside an old airplane hangar, friends and strangers alike play on a massive trampoline.

Mexican food and folk art.

A popular tourist cave with a dark past.

Bonsai garden in Oakland is curated by the first non-Japanese female bonsai master in the United States.

Megachurch turned Catholic church comprised of 10,000 glass panes.

This impressive tunnel was dug entirely by hand over the course of 36 years.

An overlooked and unassuming engineering marvel.

The L.A. Zoo has a secret garden of rare bootleg cycads, a palm specimen dating back 280 million years.

The highest dunes in California are the most likely place in the area to hear the Singing Sands.

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.

The most unique castle in all of Southern California, entirely constructed from repurposed materials.

This rare example of a "tidefall" is a spectacular drop from the cliffs down onto the beach.

A collection of memorabilia from the Beat era in the back of a San Francisco bookstore.

An extensive collection of ancient Egyptian artifacts and mummies.

Rodin's famous depiction of Dante's 'Inferno', amidst a sculpture garden of many of his other works.