[{SlideShowNav}] !!!Akershus Fortress [{Image src='200no.jpg' width='800' alt='Akershus Fortress' class='image_left' popup='false' height='600'}] [{SET customtitle='Akershus Fortress'}] \\ Akershus Fortress is is a medieval castle built to protect the city of Oslo; construction dates back to the late 1290s.