[A] POPOS: 101 SECOND WINTER GARDEN

101 Second Street, at the corner of Second Street and Mission, is an SOM designed high rise with a large glass enclosed plaza, a POPOS: Privately Owned Public Open Spaces. This space was dedicated to the public in exchange for development rights.  It's a five story high greenhouse built in 2000. It feels quite public even though the large glass sliding doors to Second Street are almost never opened.

SPUR has done an excellent report on POPOS: 
http://www.spur.org/publications/library/report/secretsofsanfrancisco_010109

101 California's POPOS is well used by the public.

There are four POPOS on Second Street, all on the northern half of the street.

Some good art in this well managed space.