The Altes Stadthaus is one of the civic buildings that helps Dortmund's centre feel older and more layered than its post-war shopping streets first suggest. Its stone facade and municipal symbolism belong to the era when the city was presenting itself as a confident industrial and administrative capital of the Ruhr.
It is best treated as part of a central walk rather than a destination in isolation. Combine it with the churches, the old market area, and nearby surviving historic facades to get a better read on Dortmund before the museums and football culture take over the day.