At the Kristiansand Kanonmuseum you can see the cannon that the occupying Germans rigged up during World War II. With a caliber of 15 inches, the cannon was said to be capable of shooting a projectile halfway to Denmark. In the bunkers, related military materials are on display. This little museum is a gem. Kids love running around the grounds, but keep an eye on them, since there aren't railings everywhere.
Kroodden, Kristiansand, 4677, Norway