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

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

World's largest collection of serial killer artwork and other macabre exhibits.

Canyon walls shrouded in ferns.

A trash dump made beautiful by nature's power.

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

The magic's in the hole!