One of California’s premier universities, University of California, Davis, invites everyone to its annual open house—a chance to learn, play, touch, taste, and enjoy the leafy campus just north of Sacramento. The university, known for its extensive agriculture research, presents everything from hands-on, family-friendly experiences (like lively sheepdog trials) to an irreverent parade (think college students and you’ll get the picture). There’s plenty of food to buy and then spread out on the campus quad for a picnic on this ultimate picnic day. Work off your meal with a visit to the U.C. Davis Arboretum, with 100 acres/40 hectares of gardens and tended landscapes (open for strolling year-round).