Galbreath Wildlands Preserve

The Rotchev House is a historic house at Fort Ross State Historic Park in the U.S. state of California. Built in 1812, it is the fort's only building to survive from the period of the Russian-American Company's California settlement. It is one of a very small number of Russian-built structures in the United States, and was designated a National Historic Landmark in 1970 as the Commander's House, Fort Ross. (Fort Ross as a whole is also a National Historic Landmark.)

Beebe Creek is a stream located in the U.S. state of California. It is located in Mendocino County.

Yorkville is an unincorporated community in Mendocino County, California, United States. It is located 7.5 miles (12 km) southwest of Hopland, at an elevation of 922 feet (281 m). The original townsite was approximately 3 miles (4.8 km) northwest of the present site at 38°54′50″N 123°15′40″W. The Yorkville post office opened in 1868 and moved to the new site with the town in 1937. "The Late Pomo or Ma-cu-maks of the present day Yorkville area spoke the central Pomo language." The name honors R.H. York, the town's founder. The Yorkville Highlands AVA was established in 1998. The Galbreath Wildlands Preserve, which is owned and managed by Sonoma State University as an educational site, is located nearby.

Yorkville Highlands is an American Viticultural Area (AVA) located in southern Mendocino County, California and is the county border between Sonoma's Alexander Valley AVA and Mendocino's Anderson Valley AVA. It was established as the nation's 133rd, the state's 79th and the county's ninth appellation on April 7, 1998 by the Bureau of Alcohol, Tobacco and Firearms (ATF), Treasury after reviewing a petition submitted by Mr. William J.A. Weir on behalf of the Yorkville Highlands Appellation Committee proposing a viticultural area within southern Mendocino County known as " Yorkville Highlands." In addition, a related petition was filed by Ms. Bernadette A. Byrne, Executive Director of the Mendocino Winegrowers Alliance proposing to extend the southern boundary of the Mendocino viticultural area to coincide with the Yorkville Highlands' boundary. The petitions requested the Yorkville Highlands area be entirely contained within both the Mendocino AVA and the county borders. Yorkville Highlands covers approximately 40,000 acres (63 sq mi) of which 70 acres (28 ha) are devoted to viticulture. At the outset, there were seven growers and two wine producers within the area, with two new growers planning vineyards and some existing growers planning to plant more vineyards. The expansion of the Mendocino viticultural area adds approximately 10,000 acres (16 sq mi) to that area. The soil in the Yorkville Highlands is rocky with a high gravel content, which provides excellent drainage. During the day, the climate is cooler than Alexander Valley but warmer than Anderson Valley, while at night the highlands are cooler than the surrounding areas. As of 2025, there are twelve growers and five wineries within the area.

Beasley Creek is a stream in the U.S. state of California. It is located in Mendocino County.

The Elk Range is a mountain range in Mendocino County, California in the United States.

Duncan Springs (formerly, Duncan Mineral Springs) is a set of springs and the site of a resort from the 1880s in Mendocino County, California, United States. Waring 1915, p. 167 It is located 1.5 miles (2.4 km) south-southwest of Hopland, at an elevation of 781 feet (238 m). Duncan Springs was a resort by the 1880s.

The Sierra Nevada World Music Festival is an annual music festival held every June on the weekend of (or the weekend following) the summer solstice. It is currently held at the Mendocino County Fairgrounds in Boonville, California.

Boonville (formerly The Corners and Kendall's City) is a census-designated place (CDP) in Mendocino County, California, United States. It is located 12.5 miles (20 km) southwest of Ukiah, at an elevation of 381 feet (116 m). The population was 1,018 at the 2020 census.

Hopland (formerly Sanel) is a census-designated place in Mendocino County, California, United States. It is located on the west bank of the Russian River, 13 miles (21 km) south-southeast of Ukiah, in the Sanel Valley, at an elevation of 502 feet (153 m). The population was 661 at the 2020 census, down from 756 at the 2010 census. Hopland is located at the start of the North Coast or Redwood Coast region of Northern California. It is 100 miles (161 km) north of San Francisco along U.S. Route 101 and a 30-minute drive (17 miles [27 km] east along State Route 175) to California's largest natural lake, Clear Lake. Hopland is a rustic farming community situated among oak-covered coastal foothills. Summer temperatures can exceed 100 °F (38 °C). Historic buildings in town include the old Hopland High School (c. 1923–1965), as well as the Thatcher Hotel, built in the late 1800s and recently reopened after undergoing a complete renovation. Approximately 5 mi (8 km) east of Hopland is the University of California's Hopland Research and Extension Center (formerly called the "Hopland Field Station"), a 5,300-acre (21.4 km2) research and education facility that UC has operated since 1951.

Annapolis (formerly Monti) is an unincorporated community in Sonoma County, California, United States. Annapolis is situated near the coastline of northern Sonoma County, and is 5 miles (8.0 km) north-northeast of the nearest community, Stewarts Point. Annapolis has ZIP code 95412. The community is named after Annapolis Orchards, which was founded in the area in the 1880s. As of 2010, Annapolis has about 401 residents.

Boonville Airport (FAA LID: D83), formerly Q17, is a public airport located one mile (1.6 km) northwest of the central business district (CBD) of Boonville, a town in Anderson Valley in Mendocino County, California, United States. It is mostly used for general aviation.