Hafnarborg is open as usual, until Christmas, everyday except Tuesdays, 12–5 p.m. The opening hours during the holidays are as follows:

December 23rd until the 26th – closed
December 27th until the 29th – open 12–5 p.m.
December 30th until January 1st – closed
The office of Hafnarborg will be partly closed during the holidays. Regular opening hours will resume from January 2nd. Entry is free and everyone welcome.
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