From NextDoor.com: 

Community Yoga at the Sunnyside Conservatory

Free community yoga class Tuesday June 27th from 6:30-8:00pm at the stunningly beautiful Sunnyside Conservatory (an official SF historic landmark); co-sponsored by the Friends of the Sunnyside Conservatory and the San Francisco Recreation and Parks Department.

Beginners and practitioners of all levels are welcome. The Conservatory is at 236 Monterey Blvd. We request you please arrive at least ten minutes early to set up. Doors will open at 6:15pm. If you have a mat, please bring it; we will have a few extra mats, first come, first served.