Tehtaan kenttä is a football stadium in Valkeakoski, Finland. It is currently used mostly for football matches and is the home stadium of FC Haka. The stadium holds 3,516 and was opened in 1934. The attendance record is 6,401 and was set in a game against big rivals HJK Helsinki in 1999. The stadium is noted for its surroundings, being located in a big park and having the nearby UPM-Kymmene paper mill at one end of the pitch . These features have led many to consider the stadium as one of the most beautiful ones in Finland.