In Viking Scandinavia one of the best known centers for commerce and industry was situated at the bottom of the Danish peninsula Jutland; the territory at that time was part of Denmark but it now belongs to Germany. This thriving trading center was called Hedeby - "the town on the heather"....
Hedeby history

... three ship wrecks from around 1000 AD which were found in the harbour area. ‘Hedeby 1’ was once about 30 m long, a slender longship built to royal standards of materials and craftsmanship. ‘Hedeby 2’ and ‘3’ were only found in fragmentary conditions. They represent different vessels, one perhaps of Slavic origin, and the other a large Nordic cargo ship, respectively ...
Hedeby ships at the Viking ship museum (in English and Danish)