The first settlement was about 25000 years ago. Real permanent settlements (and not just hunter gatherers) were founded at least as early as 5000 B.C. 4000 years after that, the Celts built a settlement in Maastricht. They presumably worshipped a "River God". A Roman city was built around 0 AD, making Maastricht the oldest city of the Netherlands (together with Nijmegen). In this time, Maastricht was called "Trajectum ad Mosam". This means "Road across the Maas". A Roman bridge in Maastricht connected the west with the east, making Maastricht a very strategic point. This bridge - located at Eksterstraat - collapsed in the 13th century, and was replaced by the famous St. Servaas bridge.