In 1826 new buildings were started by the state police. In 1835 a police station was finished, in 1844 a new town hall was finished, and Orthodox and Protestant churches. Soon after a new marketplace was opened, and St. Peter's and Paul's hospital and a gymnasium. Between 1840 and 1849 the main Catholic church was re-done Polish architects of the era, including Piotr Aigner, Antoni Corazzi and Henryk Marconi. In 1847 the city council passed a law banning building of new wooden houses.