The ornate angular towers, slate and copper roof, arched stained-glass windows and murals are a must-see for anyone interested in architecture. The design of the imposing neo-Gothic city hall was from the winning entry (that of a 26-year-old graduate of Stockholm's Academy of Arts) in a 19th-century design competition.
Its central location next to the train station and waterfront means the building is impossible to miss, and a quick stop here is easy to combine with other downtown sights.
It's right in the middle of everything and you can't miss it. Practically next door to Kärnan. Be sure to stop into the Zoegas coffee store. That's the best coffee I've ever tasted anywhere, even Italy.