Twin Peaks is a hilly area of
San Francisco which towers high above the rest of the city, affording magnificent views in all directions. It can be reached from downtown by following Market Street, in a 20 minute drive.
As the name suggests, there are two peaks, both about the same height. The summits have not been built on, and so you can see from a distance the similarity to a pair of young girl's breasts which prompted sex-starved Spanish explorers to give the hills their original name "Los Pechos de la Choca" which literally means "The breasts of the indian girl" .
The south peak is 910 feet tall and the north peak is 904 feet tall, so, technically, they fall just short of the 1000 feet required to qualify as mountains.