The Stockholm City Hall is one of Sweden’s most famous buildings, and one of the capital's most visited tourist attractions. It is famous for its grand ceremonial halls and unique pieces of art and is the venue of the Nobel Prize banquet held on 10th of December each year.
Since the City Hall is a governmental office building, you can only visit together with a guided tour. Public tours are offered all year round.
When you take a guided tour, you will experience Stockholm City Hall at its very best. Enter the Blue Hall where the annual Nobel Banquet takes place. See the Golden Hall with its exquisite mosaic, and visit the Council Chamber, where the City Council of Stockholm meets.
http://international.stockholm.se/the-city-hall/