Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

A cobblestone alley with an interesting past.

Oldest building in California still in use.

Decommissioned experimental solar facilities that pioneered solar energy technology.

Most-visited and most-photographed slot canyon in the American Southwest.

Home to items never before seen by the public.

The sci-fi villain is a little-known inhabitant of the U.S. capital's largest cathedral.

The highest point in Washington state is a volcano covered in glaciers.

Only known mainland rookery of the threatened Stellar sea lion.

Despite a legend that says this highest peak in Oregon was climbed in high heels scores of people have died on its slopes.

A towering tribute to decisiveness stands on the spot where Brigham Young and his followers decided that this must be the place.

This concert pavilion on the shore of the Great Salt Lake has been destroyed by fire, water, and disinterest but keeps coming back.

An architect's childhood fantasy treehouse made real.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

Labor provided by Great Depression-era programs restored these 25,000 acres in Tennessee.

Oldest unrestored plantation house in America that is open to the public.

Some North Carolina Cherokee have been keeping their history alive for decades with a single play.

This North Carolina grave is the final resting place of the world's most famous conjoined twins.

A former Oz-themed attraction that has fallen into disrepair, but still holds some of the original magic.

The highest point in North Carolina and the United States east of the Mississippi River, Mount Mitchell is named after argumentative explorer Elisha Mitchell.

A psychological self-portrait in the form of a giant, segmented head.

A multimedia experience that chronicles the atrocities of racism.

A nursery specializing in strange and beautiful succulents and cacti.

A British pub embodies the spirit of a California legend.