The Harrison County courthouse, now known as the Old Capitol, served as Indiana's first state capitol building. It housed state government offices from 1816 until 1825. Several other historic structures in Corydon date from the early statehood era, including the Governor's Mansion and the Old Treasury Building (Indiana's first state office building), which were built in 1817, and the Colonel Thomas Lloyd Posey home, among others. Corydon's Grand Masonic Lodge, the first in the state, was built in 1819. During the years Corydon served as a territorial and state capital, it was home to a number of politicians; notable residents during this time included Davis Floyd, a prominent local politician; two governors of Indiana, Jonathan Jennings and Ratliff Boon (the state's first and second governors, respectively); Dennis Pennington, the first Speaker of the Indiana Senate; and William Hendricks, Indiana's first U. S. Representative, its third governor, and a U.S. Senator. The state constitution's provision making Corydon the seat of state government was not a popular one, especially among the citizens of rival towns. Others expressed concern that the town's geographic location in the extreme southern part of Indiana would become inconvenient as the state's population center shifted northward; however, Dennis Pennington and other Harrison County representatives to the Indiana General Assembly successfully resisted attempts to move the seat of government from Corydon until 1825. Governor Hendricks signed a legislative bill in 1824 to move the state capital to Indianapolis, effective January 10, 1825. After the seat of state government moved to Indianapolis in 1825, Corydon continued its role as the seat of county government and a market town for the surrounding agricultural area. In 1826 a new County Clerk's office was constructed which remained the principal county office until 1848. During the early days of the town, Big Indian Creek and Little Indian Creek were both used for drinking water, bathing, and sewage, which resulted in a cholera outbreak in 1832. Following the outbreak, the town only used the creeks for bathing and multiple wells were dug for drinking water. In 1836, the town began spreading gravel on the roads, which had been dirt roads before. During 1848, a new two-story federal style brick office building was constructed on the east side of the county courthouse. This second office building remained in use until 1881. On September 11–14, 1860, the first annual county fair was held on Corydon's fairgrounds. It has been an annual event since 1860, making it the longest consecutive-running annual county fair in the state.