Photo: Wikimedia CommonsOnce a shipyard, Aker Brygge is now Oslo liveliest stretch of waterfront, a wooden promenade of restaurants, bars and boats that flows on to the sleek Tjuvholmen art district. It is the natural place for an evening stroll, an ice cream by the water or a seat in the sun watching the fjord ferries come and go. Walk to the far end for the Astrup Fearnley Museum and the little city beach, and stay for the sunset over the islands.