Verla at Jaala, Kouvola, Finland, is a well preserved 19th century mill village and a UNESCO World Heritage Site since 1996. The first groundwood mill at Verla was founded in 1872 by Hugo Nauman but was destroyed by fire in 1876. A larger groundwood and board mill, founded in 1882 by Gottlieb Kreidl and Louis Haenel, continued to operate until 1964.