Maastricht - Airport City Maastricht was the first settlement in the Netherlands dating back from the Celtic period. Nowadays, it is a bustling town with shops which attract customers from Belgium and Germany, drawing numerous tourists and businessmen. Maastricht has a historic heritage, well worth visiting, consisting in: the Helpoort and the city wall, Vrijthof square, with the Vrijthoftheatre (Theater aan het Vrijthof), the Saint Servatius basilica (Sint-Servaasbasiliek) and the Saint Johns church (Sint-Janskerk).