The California Academy of Sciences contains an aquarium, a planetarium, and a natural history museum – all under one roof. So, definitely allot a few hours to spend here, especially if you’re traveling with older children who are interested in STEM fields. Kids can step into a four-story rainforest, home to free-flying birds, butterflies, and other insects, as well as come face-to-face with the bioluminescent depths of the ocean floor. Even adults will enjoy the hourly show put on at the Planetarium, where the whole family can learn about the solar system and its wonders.