Strategically located on the eastern side of the harbour, dominating the Oslo harbourfront, are the medieval castle and fortress, arguably Oslo's architectural highlights. The complex as a whole is known as Akershus Festning. Inside the expansive complex are a couple of museums and interesting buildings.
Entry to the expansive fortress is through a gate at the end of Akersgata or over a drawbridge spanning Kongens gate at the southern end of Kirkegata. After 6pm in winter, use the Kirkegata entrance.
