The dome of the Conservatory of Flowers, Golden Gate Park, San Francisco, California, 1981, by Jet Lowe for an Historic American Buildings Survey, via Library of Congress Prints and Photographs Division.
The Conservatory is the oldest public wood-and-glass conservatory in North America, opening to the public in 1879.
enclos*ure 
interesting, gorgeous photos! Thankyou
Love those shots upward! The Conservatory where I grew up was built in 1898, so I am impressed at the age of this one.