The California State Capitol is the seat of the California state government, located in Sacramento, the state capital of California. The building houses the chambers of the California State Legislature, made up of the Assembly and the Senate, along with the office of the governor of California. The Neoclassical structure, designed by Reuben S. Clark, was completed between 1861 and 1874. Located at the west end of Capitol Park and the east end of the Capitol Mall, the building was added to the National Register of Historic Places in 1973. The California State Capitol Museum is housed on the grounds of the capitol.