Olompali State Historic Park is a 700-acre (2.8 km2) park in Marin County, California, 3.5 miles (5.6 km) north of Novato, California, overlooking the Petaluma River and San Pablo Bay. In 1977 the State of California purchased Rancho Olompali and made it into a state historic park. The foundations of two early adobe brick houses are preserved in the park. The Burdell two-story frame house, built in the 1870s serves as the ranger station. Associated ranch buildings include barns, a blacksmith shop, a saltbox house and a ranch superintendent's house.