The oldest operating apothecary in the US has treated everyone from Thomas Edison to Mark Twain.

Sniff the Titan Arum's rotting flesh.

These unusual rooms on wheels are holdovers from the 1960s.

This unusual lava tube spouts seawater during high surf.

An authentic replica of an Asian temple and garden hidden amongst the natural beauty of Hawai'i.

These ancient sacred grounds granted amnesty to those who managed to reach them.

Raised illegally, Reggie now lives at the Los Angeles Zoo after authorities spent years tracking him down.

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

This historic Chinese church was relocated and revived as a museum that preserves and celebrates Chinese art, history, and culture.

The only standing town in the United States that early Chinese Americans built for themselves.

The White House Situation Room was taken apart in 2006 and shipped to the Ronald Reagan Presidential Library.

This conservation area is also home to many of the region's desert tortoises.

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

The hundreds of movies and television shows shot in this high desert town are commemorated in a unique museum.

Every year, over 25,000 monarchs overwinter in Pacific Grove.

A sign at the end of the Santa Monica Pier marks the traditional end of the legendary American highway.

A desert ghost town—occupied for only 12 years—was once home to more than 500 silver mines.

Standing in a state of "arrested decay," this ghost town allows for a detailed peek into Gold Rush life in an unusually harsh climate.

Once thought to be the oldest living tree in the world, Methuselah was germinated before the Egyptian pyramids were built.

Quite simply the largest tree in the world (by volume).

The ghostly remains of an accidental sea.

Towering basalt columns, a creation of fire and ice.

The neighborhood of Eagle Rock is named after a gigantic boulder with a shadowy surprise.

The mall's looks were inspired by the cowboy extras who used to meet up—and cause real trouble—at this Hollywood hub.