The Seaside Lagoon is located at 200 Portofino Way in Redondo Beachs King Harbor. From 190th Street go west toward the beach until the street ends, then turn left my Harbor Drive, and proceed for about one mile. You will see a parking lot at the Redondo Beach Marina. Go into the parking lot and go to your right. Remember when parking at the Seaside Lagoon that there is a $4.25 charge per car and $12.00 for Buses. So bring your parking ticket to the Lagoon office for validation.