The Roman catholic Basilica of Saint Servaas, situated in Maastricht (The Netherlands) at the Vrijthof square, is a mainly Romanesque church dedicated to Saint Servaas.  The present-day church is probably the fourth church that was built on the site of the grave of Saint Servatius (c. 310-384), an Armenian missionary who became the first bishop of Maastricht. A small memorial chapel on the saint's grave was replaced by a larger stone church by bishop Monulph in the 6th century. The ever increasing flow of pilgrims made it necessary to build a large pilgrim church in the 9th/10th century. This church was replaced by the present-day Romanesque structure, which was built in several stages over the centuries.

http://en.wikipedia.org/wiki/Basilica_of_Saint_Servatius