Bremen in North Germany lies at the Weser river and is only about one hour away from Hamburg. It still is a Free Hanseatic City.
Although with a population of about 550,000 Bremen is the second largest city in North Germany, the city center is quite compact and most of the sights can be reached by walking around or taking a tram.
When you leave the central train station and walk southwards along Bahnhofstrasse and Herdentorsteinweg, you will reach the Markt in about 10 minutes.
For admisitrative reasons, Bremen has been separated in 5 city districts and about 23 parts of the town. Most of the sights are located around the central Markt with its city hall. Just nearby, there is the famous Böttcherstrasse as well as the Schnoor Quarter.