Beginning in 1765, lumber and grist mills were established on Mill Street, with taverns built soon thereafter on Parade Street. About 1822, the courthouse was built, which would become county seat at the creation of Belknap County in 1840. In 1823, the Belknap Mill was built to manufacture textiles; in operation by 1828, the structure is today a museum listed on the National Register of Historic Places and is the oldest unaltered brick textile mill in the country. Local industry produced lumber, textiles, shoes, hosiery, knitting machinery and needles. But the city's largest employer would be the Laconia Car Company, builder of rail, trolley and subway cars. Started in 1848, it lasted until the 1930s. The railroad entered town in 1849, carrying both freight and an increasing number of summer tourists to popular Weirs Beach.