Bodø is known as a prime fishing destination due to the town's proximity to Saltstraumen, the world's strongest maelstrom which brings millions of gallons of ocean water rushing through a narrow sound, water carrying with it a plethora of North Atlantic fish. For this reason, the town is a prime destination for fisherman of both the sport and career variety.
Outside of town the area has Cross-country skiing, Alpine skiing catering to all levels, and backwoods skiing as well.
Though not as far North as Tromsø, Bodø is also an excellent spot to catch the Northern Lights.
For a full list of accommodations and attractions, check out the Visit Norway site for the town.