Go deep on these fascinating fish, and get a bonus lesson on the importance of marine conservation.

The world’s oldest active sailing ship.

One of the most colorful free outdoor attractions in San Diego, this park is filled with murals and ties to history.

A visionary, futuristic sculpture in Los Angeles that never met its extraterrestrial potential.

The legendary building that needed ghostly approval before being built.

This opulent hotel has been visited by Spider-Man, Charlie's Angels, and the Ghostbusters.

The final resting place of a space program monolith, soon to be unveiled again to the public.

This rare tortoise skeleton has been hanging around the downtown Los Angeles museum for over a century.

One of Los Angeles's first murals once vibrantly depicted the dangers of United States imperialism.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

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

Get up close to emus and ostriches, or buy their tasty meat.

L. Frank Baum wrote part of the "Wizard of Oz" series in this wooden Victorian beach resort.

The oldest standing structure in downtown San Diego.

Swarms of butterflies cannot compare to the awe inspired by the publicly-funded nakedness once displayed in this sunken garden.

The world's largest outdoor organ is played weekly by one of just two civic organists in the U.S.

The liveliest ghost town in the state.

One of the most unusual geological features, recognizable from a dozen hit movies.

This sun-scorched lakebed contains samples of half the natural elements known to humankind.

An extraordinarily ornate museum in San Diego holds wondrous anthropological treasures.

A museum dedicated to restoring vintage aircraft, located at a working airport.

An unexpected and peaceful oasis on a hillside.

This 38-year old fish became a casualty of changing trends.

Fans of the spicy bright-red sauce can tour where it's made.