Things to do in San Francisco this weekend Visit Claude the alligator this weekend! Lesley Chen FacebookTwitterEmail Spring is in full bloom in San Francisco, the days are getting longer, and the weather is… still unpredictable. But as the city moves into the Yellow Tier and starts to open back up, activities abound for residents and visitors alike. Whether you’re looking to take in some art, explore the country’s oldest Chinatown, or sail around the bay, here are five activities to put on your calendar. Cost: $37/adult ticket Inside of the Golden Gate Park is the California Academy of Sciences, which is dedicated to environmental education and sustainability and full of natural wonders. It includes a four story-rainforest, an aquarium that hosts 40,000 live animals, a 2.5-acre living roof, a planetarium, and a swamp where an albino alligator named Claude lives. Get a ticket and spend the day getting up close and personal with a multitude of plants, animals, and hands-on exhibits.