Jesus Maria, California

Happy Valley is an unincorporated community in Calaveras County, California. It lies at an elevation of 1509 feet (460 m). Happy Valley was settled by immigrants from France, who engaged in placer gold mining and viticulture, establishing a stone winery. The date of the town's establishment is uncertain; it may predate the 1848 discovery of gold at Sutter's Mill. At its peak there were thousands of residents of many ethnic backgrounds in the vicinity; by 1956 only two buildings remained.

The Hotel Léger, in Mokelumne Hill, California is one of the oldest hotels still operating in California. The hotel and courthouse building are registered as California Historical Landmark #663, and located in present-day Calaveras County, California.

Mokelumne Hill Congregational Church, now Mokelumne Hill Community Church, is a historical building in Mokelumne Hill, California in Calaveras County built in 1856. The Congregational Church was founded on August 28, 1853. The first church building built in 1853 was lost in a fire in 1854. Mokelumne Hill Congregational Church is the fifth Congregational Church founded in California. The 1856 building was built by Pastor J. S. Zellie at a cost of $2,700. The funds for the building were donated by miners and fundraising of the women of the congregation. The new church was dedicated on March 8, 1857, by Pastor Joseph Benton of Sacramento. The church has a stone foundation and was built using wood board and batten. The Church's windows were imported by ship from the East Coast of the United States that sailed around the Straits of Magellan of South America. The name of the church changed in 1959 when it was incorporated to the Mokelumne Hill Community Church. The historical building and the church are open and visitors are welcome on Wednesdays at 7 pm and Sundays at 9:30am. The Church is California Historical Landmark No. 261

Mokelumne Hill (Mokelumne, Miwok for "People of the Fish Net") is a census-designated place (CDP) in Calaveras County, California, United States. The population was 646 at the 2010 census, down from 774 at the 2000 census. It is commonly referred to as "Moke Hill" by locals. The town takes its name from the neighboring Mokelumne River, which in turn is Miwok for the "people of Mokel," the likely name of a Native American village in the area.

The I.O.O.F. Hall in Mokelumne Hill, California, which is California Historical Landmark #256, is said to be California's first three-story building to be erected outside the coastal towns. The original building was erected in 1854 as a two-story building. A third story to be used for lodge purposes was added in 1861. According to a local website: "The I.O.O.F. Hall is a grand survivor. Built after the first fire in 1855, the building was sold to the Odd Fellows in 1860. The organization immediately began construction of a third story. The Odd Fellows celebrated their feat—constructing the first three-story stone building in California—with a grand ball. Tickets were $6, plus $1.50 for dinner. Some may have grumbled at the price, but the whole town attended. Little has changed. The I.O.O.F. Hall is still party central. The first floor houses the Hole in the Wall, one of the Foothills' liveliest bars."

The Big Bar, also called Upper Bar, is a gold mine in Jackson, California, United States. The mine opened in 1848 along the Mokelumne River and is registered as California Historical Landmark #41. The jackpot mine sprung up a town quickly for the prospectors and those who served them. An old inn is all that remains of the town. A Whaleboat ferry ran across the river from 1848 until 1852 when a new bridge was built by Soher & Parrish. A newer bridge is at the spot of the original bridge. In 1856, Dr. L. Soher opened a toll road, now called the Old Toll Road, from the city of Mokelumne Hill to the bridge. A 1862 flood washed away the Soher' bridge, so he opened a new ferry, till a new bridge was built. North of the site is the city of Butte City, Butte Store is a California Historical Landmark No. 39. The Big Bar site today is the Bureau of Land Management (BLM), Big Bar Launch Facility, on the Mokelumne River Whitewater Trail. While the Historical listing is in Amador County, the Big Bar site is also in Calaveras County across the river.

Chili Gulch (also spelled Chile Gulch) is a gulch in Calaveras County, California. This five-mile gulch was the richest placer mining section in Calaveras County. It received its name from Chileans who worked it in 1848 and 1849, and was the scene of the so-called Chilean War. The largest known quartz crystals were recovered from a mine on the south side of the gulch. Chili Gulch is registered as California Historical Landmark #265.

Glencoe (formerly, Mosquito and Mosquito Gulch) is an unincorporated community in Calaveras County, California. It lies at an elevation of 2,749 feet (838 m) and is located at 38°21′15″N 120°35′06″W. The community's ZIP code is 95232. Glencoe was formerly called Mosquito Gulch. The business portion of the town was on the north side of Mosquito Gulch, but not one of the old buildings remains. The mines were first worked by Mexicans in the early 1850s. Quartz mining predominated but there was some placer mining as well. The town today is registered as California Historical Landmark #280.The first post office was opened at Mosquito in 1858 but closed in 1869; it was re-established as Mosquito Gulch in 1873. The name was changed to Glencoe in 1912; the post office closed again in 1916, but was re-established in 1947.

Clinton (formerly, Sarahville, Sarahsville, and Lincoln) is a small town in Amador County, California. It is located 2.5 miles (4.0 km) south of Pine Grove, at an elevation of 1972 feet (601 m). Clinton was the center of a placer mining community during the 1850s and of quartz mining as late as the 1880s. This town once decided Amador County elections as its votes were always counted last. Clinton is registered as a California Historical Landmark. A post office operated at Clinton from 1856 to 1859. Nowadays, Clinton is a picturesque little town made up of an assemblage of homes and historic buildings around the center of town. It has a population of about 45.

The Superior Court of California, County of Calaveras, also known as the Calaveras County Superior Court, is the branch of the California superior court with jurisdiction over Calaveras County.

The Calaveras County Courthouse is a historic courthouse building in San Andreas, California. The brick courthouse was built in 1867 and contained the county's courtroom, jail, and sheriff's office; until 1888, executions were also conducted in the building. The county's Hall of Records was built in front of the courthouse in 1893; the two buildings nearly touch and are considered part of the same complex. The building's jail held outlaw Black Bart, a notorious Northern California highwayman, during his 1883 trial. In 1966, the county moved its courthouse to a new building; the old courthouse is now the Calaveras County Museum, which is operated by the Calaveras County Historical Society.The Calaveras County Courthouse was added to the National Register of Historic Places on February 28, 1972.

The Thorn House is a historic house located at 87 E. St. Charles Street in San Andreas, California. The house, which was built in 1861, was designed in the Carpenter Gothic style. The design features decorative bargeboards, a steeply sloping roof, a porch with a second floor veranda, and nine French doors opening to the outside. The brick used to build the house was imported from Stockton. The house also includes a landscaped garden covering nearly 3 acres (1.2 ha). Calaveras County Sheriff Ben Thorn built the house; Thorn was well known for capturing outlaws such as Black Bart, and historian Richard Coke Wood called him "one of the greatest men in the history of Calaveras County".The Thorn House was added to the National Register of Historic Places on February 23, 1972.