Booking a tour is one of the best ways to explore the sights and sounds of the historic Gaslamp Quarter. Here are some of the most popular tours: San Diego Tour: Hop-on Hop-off Trolley (From US$ 39.90) San Diego City Lights Night Tour (Starting at $ 32.00) San Diego Scenic Tour (Starting at $ 55.00) San Diego City Tour (Starting at $ 48.00)