The Environmental Education Center in Tilden Nature Area throws open its doors from 11 a.m. to 3 p.m. Farm activities, crafts, nature exploration and homemade ice cream are all part of the family-friendly day. The center is located at the north end of Central Park Drive. Information line: 510-544-2233.
Note: No fireworks of any kind are allowed in the regional parks, most of which will be open on July 4.
The Berkeley Marina and Cesar Chavez Activity Park will be open from 12 noon to 10 p.m. Adventure Playground will be open from 11 a.m. to 8 p.m.
At Cesar Chavez Activity Park, kids can roll down the hill inside clear plastic Zorbing balls, enjoy the Slackline Stun Show featuring artists who performed at the Superbowl, and catch a preview of the Giant Show Kites from the Berkeley Kite Festival. The day-long celebration includes a climbing wall, bungee run and bungee trampoline, jousting, old-fashioned sack races and food booths.
Participants can hitch a ride on a dragon boat from 2 to 6 p.m.
The alcohol-free event includes free bicycle valet parking. No admission charge.
Fireworks light up the sky beginning at 9:30 p.m. Set off at the end of the Berkeley Pier, they can be seen from both sides of the park.