What Fortress used as a palace and prison has the Festning tunnel running underneath it?
Festning Tunnel The Festning Tunnel (Norwegian: "Festningstunnelen" ) is a motorway tunnel on European Route E18 in the city center of Oslo, Norway. The tunnel has two tubes, with three lanes in each. It runs from Bjørvika, under Akershus Fortress, The City Hall Square and Vika to Filipstad. The tunnel is 1800 m and -45 m elevation at the deepest.
Wressle Castle Wressle Castle is a ruined palace-fortress in the East Riding of Yorkshire, England, built for Thomas Percy in the 1390s. It is privately owned and not open to the public. Wressle Castle originally consisted of four ranges built around a central courtyard; there was a tower at each corner, and the structure was entered through a gatehouse in the east wall, facing the village.