Petaluma Reservoir

Sonoma Mountain is a prominent landform within the Sonoma Mountains of southern Sonoma County, California. At an elevation of 2,463 ft (751 m), Sonoma Mountain offers expansive views of the Pacific Ocean to the west and the Sonoma Valley to the east. In fact, the viticultural area extends in isolated patches up the eastern slopes of Sonoma Mountain to almost 1,700 feet (520 m) in elevation. The eastern and northern slopes are protected from afternoon heat and hence are more densely forested in oak woodlands, abetted by the well-drained, nutrient-rich soils. The western and southern slopes, on the other hand, are drier and warmer, leading to fewer dense woodlands and more chaparral, grassland and oak savannah.

The Sonoma Mountains are a northwest–southeast trending mountain range of the Inner Coast Ranges in the California Coast Ranges System, located in Sonoma County, Northern California.

Rancho Petaluma Adobe is a historic ranch house in Sonoma County, California. It was built from adobe bricks in 1836 by order of Mariano Guadalupe Vallejo. It was the largest privately owned adobe structure built in California and is the largest example of the Monterey Colonial style of architecture in the United States. A section of the former ranch has been preserved by the Petaluma Adobe State Historic Park and it is both a California Historic Landmark and a National Historic Landmark. The Rancho Petaluma Adobe State Historic Park is located on Adobe Road on the east side of the present-day town of Petaluma, California.

Green String Farm was a 140-acre (57 ha) natural process sustainable farm near Petaluma, California that grew fruits and vegetables year-round and sold them in an on-site farm store. The farm also supplied produce, free-range eggs and grass fed beef to regional restaurants including Chez Panisse in Berkeley, CA. Bob Cannard and Fred Cline founded Green String Farm in 2003. Green String focused on environmental sustainability practices, which is different from Certified Organic. Green String Farm closed permanently in December 2022.

Rancho Petaluma was a 66,622-acre (269.61 km2) Mexican land grant in present-day Sonoma County, California given in 1834 by Governor José Figueroa to Mariano Guadalupe Vallejo. Rancho Petaluma stretched from Petaluma River on the west over the hills and down to Sonoma Creek on the east, including all land that lay between these two waterways from the edge of San Francisco Bay to approximately the present site of Glen Ellen. The rancho included present-day Petaluma and Lakeville.

Petaluma Municipal Airport (FAA LID: O69) is a public airport one mile (1.6 km) northeast of Petaluma, in Sonoma County, California, United States. It covers 220 acres (89 ha) and has one runway measuring 3601 x 75 feet. It is used for general aviation. FedEx feeder flies Cessna Caravan 208Bs into Petaluma.

The Fairfield Osborn Preserve is a 450-acre nature reserve situated on the northwest flank of Sonoma Mountain in Sonoma County, California. There are eight plant communities within the property, oak woodland being the dominant type. Other communities include chaparral, Douglas fir woodland, native Bunch grass, freshwater marsh, vernal pool, pond and riparian woodland. The flora is extremely diverse including many native trees, shrubs, wildflowers, grasses, lichens and mosses. A diverse fauna inhabits this area including black-tailed deer, coyote, bobcat and an occasional mountain lion; moreover, there are abundant avifauna (including some neotropical migrants), amphibians, reptiles and insects. Copeland Creek and its tributaries drain the Preserve as they wend their way down steep ravines toward eventual discharge to the Laguna de Santa Rosa. The property was originally a Spanish Land Grant holding, devolving to private ownership and eventually given to The Nature Conservancy; the preserve is now owned and managed by Sonoma State University as a research and education site. An understated natural trail system weaves through the property to provide access to creek canyons, ridges and marshy areas. The preserve is situated at elevations 1,350 to 2,300 feet (411 to 701 meters) above sea level and features a landscape riddled with basalt exposures that betray the volcanic prehistory of Sonoma County. The climate at the Preserve is mild, with most rainfall occurring in the winter months and with some influence of the Pacific Ocean providing moderating temperatures and some marine fog on early summer mornings.

The Van Hoosear Wildflower Preserve is a private nature reserve on Carriger Creek in southern Sonoma County, California, United States. Van Hoosear was created to preserve an area known for displays of native wildflowers and to allow animal migration and ecological connection between Sonoma Mountain and the floor of the Sonoma Valley. This 163-acre (66 ha) preserve has been established with an endowment fund to allow perpetual management; access to the preserve is controlled by the Sonoma Ecology Center.

Casa Grande High School is a public high school in Petaluma, California. Casa Grande is one of two high schools in the Petaluma City Schools District.

Sonoma Mountain High School is one of three alternative schools in Petaluma, California. It is located on the Casa Grande High School campus. There are, on average, 32 pupils enrolled at Sonoma Mountain High School at any given time. About 6 pupils graduate every year.

Terra de Promissio (English: The Land of Promise) is a family owned and operated vineyard that grows Sonoma Coast pinot noir grapes. The vineyard is located in the Sonoma Coast AVA, outside Petaluma, California in Sonoma County.

Wolf House was a 26-room mansion in Glen Ellen, California, built by novelist Jack London and his wife Charmian London. The house burned on August 22, 1913, shortly before the Londons were planning to move in. Stone ruins of the never-occupied home still stand, and are part of Jack London State Historic Park, which has been a National Historic Landmark since 1963.