San Francisco Events for the Month of December

 

 

Migration of Grey Whales (seasonal North & South)

http://www.oceanicsociety.org/graywhales

 

Tree Lighting Ceremonies at Ghirardelli Square & Union Square

 

Critical Mass Bike Ride

(begins at east end of Market St on the last Friday of the month at about 6pm)

http://critical-mass.info/