NO. 3 MISSION SAN FRANCISCO SOLANO - On July 4, 1823, Padre José Altamira founded this northernmost of California's Franciscan missions, the only one established in California under independent Mexico. In 1834, secularization orders were carried out by Military Commandant M. G. Vallejo, and Mission San Francisco Solano became a parish church serving the Pueblo and Sonoma Valley until it was sold in 1881.
Location: Sonoma State Historic Park, NW corner of Spain at 1st St E, Sonoma

NO. 4 GENERAL M. G. VALLEJO HOME - The home of General Mariano Guadalupe Vallejo, known as 'Lachryma Montis' (Tears of the Mountain), was built in 1850. Its name was derived from the springs that now are the source of Sonoma's water supply. General Vallejo, born at Monterey July 7, 1808, was commander of the northern Mexican frontier, founder of the Pueblo of Sonoma, and a member of the first Constitutional Convention of California.
Location: Vallejo Home, Sonoma State Historic Park, Spain at 3rd St W Sonoma

NO. 5 FORT ROSS - Founded in 1812 by Russians from Alaska. When Russians withdrew to Alaska in 1841, Captain Sutter bought the improvements and supplies. The State acquired the fort in 1906 and the remaining buildings-Greek Orthodox Chapel, Commandant's Quarters, and Stockade-were restored. The chapel, destroyed by fire in 1970, was reconstructed in 1974.
Location: 19005 Coast Hwy, State Hwy 1 (P.M. 33.0), 12 mi N of Jenner

NO. 7 BEAR FLAG MONUMENT - On June 14, 1846, the Bear Flag Party raised the Bear Flag on this spot and declared California free from Mexican rule. Following the raising of the American flag at Monterey July 7, 1846 by Commodore John Drake Sloat, on July 9 the Bear Flag was hauled down and the American flag raised in its place by Lieutenant Joseph W. Revere, U.S.A., who had been sent to Sonoma from San Francisco by Commander John B. Montgomery of the U.S. Sloop-of-War Portsmouth.
Location: Sonoma Plaza, E Spain and 1st St E, Sonoma Plaza

NO. 17 BLUE WING INN - Erected by General M. G. Vallejo about 1840 to accommodate emigrants and other travelers, the Inn was purchased in gold rush days by Cooper and Spriggs, two retired sea-faring men, and operated as hotel and store. It was among first hostelries in Northern California. Notable guests, according to local tradition, included John C. Frémont, U. S. Grant, Governor Pío Pico, Kit Carson, Fighting Joe Hooker, William T. Sherman, Phil Sheridan, and members of the Bear Flag Party.
Location: Sonoma State Historic Park, 133 E Spain St, Sonoma

NO. 18 PETALUMA ADOBE - Vallejo’s Petaluma Adobe, Petaluma Adobe served as the center for General Mariano Guadalupe Vallejo’s 66,000-acre working rancho from 1836-1846.  It was once the largest privately owned adobe building in Northern California; Vallejo sold the building and surrounding acres in 1857.  The Native Sons of the Golden West acquired the Adobe in 1910 and the State of California obtained it in 1951.
Location: Petaluma Adobe State Historic Park, 3325 Adobe Rd, Petaluma

NO. 234 LUTHER BURBANK HOME AND GARDEN - In this garden Luther Burbank wrought with living plants to bring to the world greater fertility, wealth, and beauty, developing new varieties that produced better fruits and more beautiful flowers.
Location: 200 block of Santa Rosa Ave, Santa Rosa

NO. 237 TEMELEC HALL - This structure was erected in 1858 by Captain Granville P. Swift, a member of the Bear Flag Party, using stone quarried here by native Indian labor. General Percifor F. Smith, U.S. military commander in California, lived in the little house nearby in 1849.
Location: Temelec Adult Community, 220 Temelec Circle, 3 mi SE of Sonoma

NO. 316 PRESIDIO OF SONOMA (SONOMA BARRACKS) - Sonoma Barracks was erected in 1836 by General M. G. Vallejo. It became the headquarters of the Bear Flag Party, which in June 1846 proclaimed a 'California Republic' and raised the Bear Flag on Sonoma's Plaza. Twenty-three days later, on July 7, 1846, Commodore John Drake Sloat took possession of California for the United States government. Stevenson's Regiment, Company C, U.S.A., occupied the barracks in April 1847.
Location: Sonoma State Historic Park, NW corner of E Spain and 1st St E, Sonoma

NO. 392 BUENA VISTA WINERY AND VINEYARDS - Founded in 1857, this is the birthplace of California wine. Its founder, Colonel Agoston Haraszthy, called the father of the state's wine industry, toured Europe in 1861 to gather grape vine cuttings, he also oversaw planting the vineyards and digging wine storage tunnels into the limestone rock of the hillsides.
Location: 18000 Old Winery Rd, 2 mi NE of Sonoma

NO. 392-1 SITE OF HARASZTHY VILLA - Here Count Agoston Haraszthy, 'Father of California Viticulture,' built an imposing villa in 1857-58, as his home. California's first formal Vintage Celebration, a masked ball, was held at this site on October 23, 1864. General and Mrs. Mariano Guadalupe Vallejo were guests of honor. While living here, Haraszthy oversaw operations of the Winery and Buena Vista Vinicultural Society.
Location: Castle Rd near Buena Vista Winery, Sonoma

NO. 496 SWISS HOTEL - The Swiss Hotel was constructed about 1850 by Don Salvador Vallejo. This adobe adjoined his first Sonoma dwelling, built in 1836. Occupied by various pioneers, in 1861 it was the house of Dr. Victor J. Faure, vintner of prize-winning wines made from the grapes of the Vallejo family vineyards. Later, it was used as a hotel and restaurant.
Location: 18 W Spain St, Sonoma

NO. 501 SALVADOR VALLEJO ADOBE - This was the home of Captain Salvador Vallejo, brother of General Mariano G. Vallejo, who founded Sonoma. The adobe was built by Indian labor between 1836 and 1846, and was occupied by Captain Vallejo and his family until the Bear Flag Party seized Sonoma on June 4, 1846. Cumberland College, a Presbyterian coeducational boarding school, was located here from 1858 to 1864.
Location: 421-1st St W Sonoma

NO. 621 ITALIAN SWISS COLONY - Here in 1881 Italian immigrants established an agricultural colony. Choice wines produced from grape plantings from the Old World soon brought wide acclaim. By 1905, 10 gold medals had been awarded these wines at international competition.
Location: 10 mi S on Asti Post Office Rd from Asti Rs, thru Winery Gates, plaque at office door,  Asti

NO. 627 UNION HOTEL AND UNION HALL - The original hotel was a one-story adobe, the adjoining hall was a one-story frame structure. After the fire of 1866, a two-story stone hotel and a two-story frame hall with rooms upstairs for hotel guests were built. The Union Hotel was conducted as a hotel until 1955, when the Bank of America acquired the property.
Location: 35 Napa and 1st St W Sonoma

NO. 667 NASH ADOBE - This house was built by H. A. Green in 1847. Here John H. Nash was taken prisoner by Lieutenant William T. Sherman in July 1847 for refusing to relinquish his post as alcalde to Lilburn W. Boggs. The adobe was restored in 1931 by Zolita Bates, great-granddaughter of Nancy Patton Adler, who lived here after her 1848 marriage to Lewis Adler, pioneer merchant of San Francisco and Sonoma.
Location: 579-1st St E, Sonoma

NO. 692 HOOD HOUSE - This was the site of Rancho los Guilucos (18,833 acres), which Governor Juan Bautista Alvarado granted to John Wilson and his wife, Ramona Carrillo, sister-in-law of General Mariano Guadalupe Vallejo, in 1839. The house, constructed in 1858 by William Hood for his bride, Elsia Shaw of Sonoma, incorporates the original bricks fired on the property. The property was purchased in 1943 by the California Department of the Youth Authority for Los Guilucos School for Girls.
Location: Hood Mansion, Santa Rosa Jr College, 7501 Sonoma Hwy (Hwy 12), Santa Rosa

NO. 739 VINEYARD AND WINERY (SAN FRANCISCO SOLANO MISSION VINEYARD) - Here the Franciscan Fathers of San Francisco Solano de Sonoma Mission produced sacramental wine from the first vineyard in Sonoma Valley, planted in 1825. After secularization of the mission in 1835, General Mariano G. Vallejo, Commandant of Alta California's northern frontier, produced prize-winning wines from these grapes. A young immigrant from Italy, Samuele Sebastiani, with his wife Elvira, purchased this property in the early 1900s. Since that time, he and his family have continued with distinction the traditions handed down to them. Much of the original mission vineyard is still planted to choice wine grapes.
Location: 394-4th St E at Spain St, Sonoma

NO. 743 JACK LONDON STATE HISTORIC PARK - This is the 'House of Happy Walls,' built in 1919 by Charmian K. London in memory of her husband, renowned author Jack London. Here are housed many of his works and the collection gathered in their travels throughout the world. In 1960 Charmian's house, the ruins of Jack's 'Wolf House,' and his grave were presented to the State by his nephew, Irving Shepard.
Location: Glen Ellen

NO. 820 ST. TERESA'S CHURCH - Constructed of redwood in 1859 by New England ship's carpenters on land donated by Jasper O'Farrell, the church has served this coastal community continuously for over a century. Father Louis Rossi was appointed pastor on March 8, 1860, and Archbishop Alemany dedicated the church on June 2, 1861.
Location: Bodega Hwy near Bodega Ln, Bodega

NO. 833 BODEGA BAY AND HARBOR - Discovered in 1602-03 by Vizcaino's expedition, the bay was named by Bodega in his survey of 1775. The harbor was used in 1790 by Colnett and in 1809 and 1811 by the Kusov expeditions. The Russian-American company and their Aleut hunters used the bay as an outpost until 1841, Stephen Smith took control in 1843. Pioneer ships of many nations used Bodega Bay as an anchorage.
Location: Doran Park, 1.6 mi W of State Hwy 1 (P.M. 9.4), on Doran Beach Rd, 0.5 mi S of Bodega Bay

NO. 835 COOPER'S SAWMILL - In 1834, Mariano G. Vallejo's brother-in-law, John B. R. Cooper, constructed California's first known power-operated commercial sawmill. In addition to sawing redwood lumber, the mill and surrounding settlement served as a barrier to Russian encroachment from the west. Located on Mark West Creek, the waterpowered mill was destroyed by flood in the winter of 1840-41.
Location: SW corner, intersection of Mirabel and River Rds (P.M. 174) near Mirabel Park, 8 mi W of Santa Rosa

- Cotati's hexagonal town plan, one of only two such in the United States, was designed during the 1890s by Newton Smyth as an alternative to the traditional grid. Each of the streets surrounding the six-sided town plaza, where early settler Dr. Thomas Page's barn once stood, is named after one of Page's sons, 'Cotati' derives from the name of a local Indian chief.
Location: Downtown plaza, SE corner of Old Redwood Hwy and E Cotati Ave, Cotati

NO. 893 WALTERS RANCH HOP KILN - This is the most significant surviving example of a stone hop kiln in the North Coast region. Built by Angelo 'Skinny' Sodini in 1905, it served the Russian River Valley and North Coast regions, once the major hop-growing areas in the West. In the latter part of the 19th century, Sol Walters purchased 380 acres, part of the Sotoyome Rancho patented in 1853, from Josefa Fitch.
Location: 6050 Westside Rd, Healdsburg

NO. 915 PETRIFIED FOREST - The petrified forest, historically and scientifically significant as the state's only petrified forest dating from the Eocene period, is unique in its size, scope, and variety of petrification. Discovered in 1870, the forest is about a mile long by half a mile wide.
Location: 4100 Petrified Forest Rd, 5 mi NW of Calistoga

NO. 939 Twentieth Century Folk Art Environments (Thematic)-JOHN MEDICA GARDENS - 'Trying to make it look better,' John Medica spent 20 years transforming a barren hillside into a magical garden of plants and creative stone works. Castles were his greatest triumph. A native of Yugoslavia, self-taught, Medica created an oasis for people and animals to enjoy. This imaginative assemblage is one of California's remarkable Twentieth Century Folk Art Environments.
Location: 5000 Medica Rd, off Stonespring Rd in a gated community, Santa Rosa

NO. 981 ICARIA-SPERANZA COMMUNE - Icaria-Speranza was a Utopian community based on the writings of French philosopher Etienne Cabet. In 1881, at Cloverdale, French immigrant families led by the Dehay and Leroux families began their social experiment in cooperative living based on solidarity and depending on an agrarian economy. It lasted until 1886. Icaria-Speranza was the only Icarian Colony in California and the last of seven established throughout the United States. On this site stood the Icarian schoolhouse, deeded to the county in 1886.
Location: W side of Asti Rd, 1.68 mi N of Asti Post Office Rd, S of Cloverdale