San Diego Zoo (San Diego, California)
One of the best zoos in America, the San Diego Zoo is a must-visit if you’re an animal lover. Like a trip around the world in one day, this expansive zoo boasts polar bears, giraffes, orangutans, penguins, gorillas, koalas and hundreds of other creatures. Travel about an hour away to the zoo’s Safari Park where you can take a tour and see rhinos, giraffes, kangaroos and more up close. The San Diego Zoo is far and away one of the best things to do in California.