San Francisco's oldest surviving monument and meeting place for 1906 survivors.

An unfortunate geological resemblance to Satan has labeled this Pasadena gorge as a passage to the underworld.

Experience a quartz crystal sound bath inside a storied, all-wood sound-chamber.

The tea room that pushed the boundaries of adorable straight into...we can't find the words.

Canyon walls shrouded in ferns.

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

A hand-built folk art installation covered with messages of God's love.

Tiki luxury on Nob Hill.

A walk-in working camera obscura produces 360-degree live images of the San Francisco coast.

Towering basalt columns, a creation of fire and ice.

A strange house built only at night, with rumored mystic inspiration.

The rocks in this arid basin leave trails of movement behind them.

Shop selling 500 flavors of soda has something for everyone.

Resting place of Hollywood's immortals is also site of summer film screenings.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

A huge musical instrument played by the ocean.

One of the last Art Deco gas station still standing in Dallas.

A serene temple with stunning stained glass hides in downtown Dallas.

A "Texanic" (gigantic Texas) collection of Art Deco architecture at Dallas' historic Fair Park.

This downtown Dallas art installation is always on the lookout.

From the late 19th century until the 1960s, these stone-lined "stumps" were a popular place for people to air their views on local and international issues.

This nondescript tunnel has been featured in a number of iconic movies, from “Roger Rabbit” to “Back to the Future.”

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