Camera Obscura, camera obscura in San Francisco
San Francisco's Camera Obscura provides live panoramic views of the surrounding area.
Built in 1946, it is a valuable example of pre-photographic technology.
This ancient technique tells the story of visual imaging history.
Located near the Cliff House, it is readily available to tourists.
It is listed on the National Register of Historic Places in the United States of America.
Location: San Francisco
Source: Wikimedia