Los Osos Valley

Prefumo Creek is a tributary stream of San Luis Obispo Creek. Its mouth is at its confluence with San Luis Obispo Creek at an elevation of 102 feet (31 meters). Its source is found at 35°15′41″N 120°45′28″W in the Irish Hills. From its source it flows down into Laguna Lake at 35°15′51″N 120°41′32″W, and provides the overflow channel from the lake at 35°15′35″N 120°41′01″W that drains to the San Luis Obispo Creek.

The Dalidio Ranch Project refers to a development project proposal most recently known as Measure J, which was voted on by the citizens of San Luis Obispo County, California, on the November 7, 2006, ballot. The parcel proposed for the development project is a 131-acre (53 ha) parcel of farmland located adjacent to San Luis Obispo, California, west of U.S. Route 101, and east of Madonna Road. The parcel is south of the Promenade Shopping Center and bordered by Prefumo Creek. The project proposed would include "a 13-acre (5.3 ha) organic farm, a seven-day-a-week farmers' market, a monarch butterfly preserve visible from a grove of eucalyptus trees, a drive-through (possibly 24-hour) pharmacy, retail development featuring walkways and ornate fountains, and 60 units of workforce housing," and the construction of an overpass connecting U.S. Route 101 and Prado Road, according to an article by New Times San Luis Obispo. Ernie Dalidio was the former owner of Dalidio Ranch, and actively petitioned for the city annexation of the land starting in 1991; he sold the property in 2013.

Rancho Laguna part of the grazing lands granted to Mission San Luis Obispo de Tolosa in 1844, surrounding Laguna Lake at the head of the Los Osos Valley in the city of San Luis Obispo and San Luis Obispo County, California. With Rancho Cañada de los Pinos Rancho Laguna was one of the two ranchos returned to the Catholic Church. It was returned in 1859, after its confiscation in 1845.: Appx, 87–88 

Ranchito de Santa Fe was a 165.76-acre (0.6708 km2) Mexican land grant that lies in the present day, partially within the southern bounds of the city of San Luis Obispo, the balance lies east of U.S. Route 101 in San Luis Obispo County, California.

The Pereira Octagon Barn of San Luis Obispo is a historically and culturally important structure located on the southern outskirts of San Luis Obispo, California. It was built in 1906 by Henri LaFranchi, a young Italian-Swiss immigrant and the owner of a small meat market, John Damaso, an Azorean immigrant and a carpenter by trade, and a third, unknown man identified only as a “milk farmer.” Since there were no other octagonal barns in the area, the builders may have worked from patterns of octagonal construction in farm journals or catalogs. The first user of the barn was Italian-Swiss immigrant Antonio Stornetta, who leased the barn for his Santa Fe Dairy operation until 1917. Joaquin and Josephine Pereira, with Josephine's sister Eleanor and her husband Manuel Garcia, purchased the property in 1920 and made it part of an adjoining dairy operation in the Los Osos Valley. They were typical of many first- and second-generation Portuguese Americans, who followed in the footsteps of the Italian-Swiss in the dairy business. The Pereira-Garcia operation was called the Home Dairy. It had a pasteurization and bottling plant at 719 Higuera Street and made daily milk deliveries throughout the city of San Luis Obispo. Dairy operations continued into the 1950s when small-scale dairy operations were no longer economically viable. The barn then supported a small-scale cattle operation and some row-crop farming. The property was purchased in 1994 by John and Howard Hayashi, who three years later entered into a lease agreement with the Land Conservancy of San Luis Obispo County. The Land Conservancy has restored the barn, which will be used as a community gathering place. The Octagon Barn (5000 sq. ft.) is made with redwood timbers and has a new, custom shingled replacement redwood roof. There is a cupola on top reaching over 40 feet above the floor. The barn is accompanied by a 2,000-square-foot Milking Parlor (1938) and a Calf Barn.

Laguna Lake a lake and seasonal reservoir in the upper Los Osos Valley, in San Luis Obispo, California. It lies at an elevation 121 feet (37 m). It is supplied with water from various small watercourses from the surrounding valley but especially by Prefumo Creek a tributary of San Luis Obispo Creek that enters the lake at 35°15′51″N 120°41′32″W. The Lake is also drained by Prefumo Creek at from its eastern end at 35°15′35″N 120°41′01″W that drains to San Luis Obispo Creek.

The Madonna Inn is a motel in San Luis Obispo, California. Opened for business in 1958, it quickly became a landmark on the Central Coast of California. It is noted for its unique decor, pink dining room, and themed rooms. It was created by Alex Madonna, a successful construction magnate and entrepreneur (d. April 2004), and his wife Phyllis. The inn includes a restaurant and bakery, and is located on the west side of US Route 101 and situated on the lower eastern portion of Cerro San Luis Obispo.

The Pacific Coast Railway Company Grain Warehouse is a warehouse building located at 65 Higuera St. in San Luis Obispo, California. The warehouse is the only surviving building from the Pacific Coast Railway's headquarters as well as the only extant grain storage building in San Luis Obispo. The date of the building's construction is uncertain; city records state that it was built in 1885, but it may have been rebuilt in 1892–93 after a fire. The wood frame building has corrugated iron paneling on its walls and roof, a typical design for contemporary storage buildings. The Pacific Coast Railway used the warehouse from its construction until the railway folded in 1942; the warehouse held grain grown in the region, which was at the time a major producer of grain and beans.The warehouse was added to the National Register of Historic Places on June 23, 1988.

San Luis Obispo (; Spanish for "St. Louis the Bishop", Spanish: [san ˈlwis oˈβispo]; Chumash: tiłhini) is a city and county seat of San Luis Obispo County, in the U.S. state of California. Located on the Central Coast of California, San Luis Obispo is roughly halfway between the San Francisco Bay Area in the north and Greater Los Angeles in the south. The population was 47,063 at the 2020 census.San Luis Obispo was founded by the Spanish in 1772, when Saint Junípero Serra established Mission San Luis Obispo de Tolosa. The town grew steadily through the Mexican period before a rapid expansion of San Luis Obispo following the American Conquest of California. San Luis Obispo is a popular tourist destination, known for its historic architecture, vineyards, and hospitality, as well as for being home to California Polytechnic State University, San Luis Obispo.

St. Stephen's Episcopal Church is a parish of the Episcopal Church in San Luis Obispo, California. The parish was established in 1867, and the church building was completed shortly thereafter. The current Rector is Rev. Ian Delinger.

Cerro San Luis Obispo (Obispeño: łpɨłhɨtšnuka ) is a 1,292 feet (394 m) mountain in San Luis Obispo, California. It is part of the chain of peaks called the Nine Sisters. It is a common spot for hiking, jogging and mountain biking, and has steep terrain. Below the west side of the visible peak, there is a large plateau with a large wooden stage on the east end. The large white "M" present on the east face derives from Mission College Preparatory Catholic High School.

The Robert Jack House, at 536 Marsh St. in San Luis Obispo, California, is a two-story Italianate-style historic house. It was listed on the National Register of Historic Places in 1992. The listing included two contributing buildings.The Jack House is now owned by the City of San Luis Obispo. Volunteer docents offer guided tours on Sundays from April through November, and the house is also open for holiday celebrations and special events. The house was built by, and was a home of, Robert Edgar Jack (died 1916), who was "a prominent banker and land developer and wool grower in Central California.": 8  The house was deemed significant for its association with Jack. He lived there from 1882 until his death. Jack, as a banker and a leading citizen, was quite involved in promoting the development of railroad through the central coast, and also benefited economically from the railroad. The house is also perhaps of significance architecturally as a good example of Italianate architecture.