Seaside Park (commonly known as the Ventura County Fairgrounds) is an event venue in Ventura, California, United States. The 62-acre site (25 ha) is the home of the Ventura County Fair. Trade shows, concerts, and other events are held throughout the year at the fairgrounds. The beachfront site, near the mouth of the Ventura River, also includes Surfers' Point, known for its point break that produces distinctive waves.