Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

Colorful sand dunes create a unique attraction in this part of Utah's red-rock country.

Erosion and various mineral deposits give this striking canyon its distinct color and soft appearance.

A house carved into a rock in the 1940s.

The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.

The unusual patterns in this rock formation result from two distinct modes of weathering.

A tunnel with windows, so you don't miss out on the impressive views.

The lighthouse central to the 1980s horror classic "The Fog" is, in fact, located in one of the foggiest areas of the Pacific Coast.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

A hotel and restaurant serving as the mecca of kitsch.

San Francisco's newly reopened hands-on science museum.

World-famous, Pink's still manages to keep its prized cult fetish status.

Scores of vintage street lamps shine along L.A.’s Miracle Mile.

Tiki luxury on Nob Hill.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

Its buzzing collection honors vibrator history.

High on a hill overlooking Los Angeles lives a world famous, high-power conical Tesla Coil.

An artsy hidden staircase leads to breathtaking views of San Francisco.

The second-largest giant sequoia in the world.

A 19th-century cabin built into a hollowed-out Sequoia tree.

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

Four hundred granite steps were built into this massive rock by the National Park Service.

The location where the iconic movie character declared it was time to go home.

This raised bulls-eye visible from space was the subject of an intense geologic controversy.