<human>:  What are the top things to do in Santa Monica?
<bot>: The top things to do in Santa Monica include visiting the Santa Monica Pier, exploring the Third Street Promenade, enjoying the beach, taking a stroll along the Pier, visiting the Santa Monica Mall, exploring the famous Santa Monica Pier Aquarium, biking along the Pacific Coast Highway, discovering the Santa Monica State Beach, taking a guided tour of the Santa Monica Mountains, and visiting Santa Monica's many art galleries.