The beautiful Derlon Hotel in Maastricht is very much part of the city’s history. It is situated on the lovely square Onze Lieve Vrouwe-plein, in the very center of the old town, and it is almost a century and a half old. That does not mean that the hotel itself is old-fashioned. Several years ago, it was completely rebuilt. During the construction works, archaeologists found several Roman remains, which have been left visible in the Derlon Museum Cellar.
It is all very neatly explained. There are several levels, the oldest of which dates back to the first half of the first century. There was a small paved road over here. Other levels date to post-70 and to the middle of the second century. From about 200, there is a layer of gravel, which covered a field between a sanctuary, a gate, and something that was probably a shop. The gate has been rebuilt in Museum Park Archeon.
To be honest, we are not really certain that there was a sanctuary. However, the remains of a Jupiter column have been found, and although these monuments may have stood anywhere, they suggest that the gods were venerated in the neighborhood. Besides, next to Derlon Hotel is the basilica of Our Lady, Star of the Sea, a very, very old church, which may well have replaced an older, pagan sanctuary. One day, excavations may take place over there. (BTW: the pilgrim is to say a beautiful but curious prayer, in which he almost blackmails the Virgin.)
If you want to visit the Museum Cellar, just go to the hotel and ask. The people are really kind, and will usually allow you to go there. Perhaps they will ask you to return a bit later. However, officially, it is only open on Sunday. Hotel guests can always visit the place.