In central Karlskoga, on Rävåskullen, is a cannon calibre 28 located. It is one of the largest cannons constructed by Bofors and it was one of the four cannons on the coastal defence ship Sverige. The ship was scrapped in 1960 and the cannon was given to the municipality of Karlskoga. It was placed on Rävåskullen when Karlskoga celebrated its 400th anniversary in 1986.
