This venerable institution merits a pilgrimage. Established in 1877, it produces 18 kinds of beer, including the very quaffable Macks Pilsner, Isbjørn, Haakon and several dark beers. At 1pm year-round (plus 3pm, June to August) tours (Nkr160, including a beer mug, pin and pint) leave from the brewery's own Ølhallen Pub, Monday to Thursday. It's wise to reserve in advance.