 Among his varied works, he designed new baroque-style town plans for the towns of Pori (1852), Mariehamn (Åland Islands) (1859) and Uusikaupunki (1856), an English-style romantic landscape park for Seinäjoki (1858), neo-gothic churches for Lovisa (1865) and Uusikaupunki (1864), Rundbogenstil-neo-Gothic Lovisa town hall and the House of Nobility in Helsinki (1862), neo-Renaissance Nya Teatern, Helsinki (1853, burnt down 1863) as well as redbrick factory buildings in Littoinen, Turku, Forssa and Tampere and various rustic villas for private clients.A similar eclecticism was continued most successfully by one of Chiewitz's employees, Theodor Höijer (1843-1910), who went on to establish one of the most commercially successful private architecture firms in Helsinki, designing tens of buildings mostly in Helsinki, schools, libraries and several apartment blocks.One of his most famous works, the redbrick Erottaja fire station, Helsinki (1891) is seen as a mixture of neo-Gothic and neo-Renaissance styles modelled on Giotto's Campanile in Florence and the tower of the medieval Palazzo Vecchio also in Florence.