2 Best Sights in Southern Norway, Norway

This circular fortress with 16-foot-thick walls, on a promontory opposite Festningsgata, was completed in 1672. Its role has been much more decorative than defensive; it was used once, in 1807, during the Napoleonic Wars, to defend the city against British invasion. You can only visit around the grounds. For the moment the fortress is not available for the public. 

At the Kristiansand Cannon Museum 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. Kids love running around the grounds, but keep an eye on them, since there aren't railings everywhere.