Roosenberg Abbey was established in 1238 at Waasmunster, halfway between Ghent and Antwerp. The abbey is still operating at Waasmunster, though not on its original site. Its 750-year history has not been uninterrupted.
Today the focus of its spirituality is "Marian and Franciscan".
Wikipedia https://en.wikipedia.org/wiki/Roosenberg_Abbey
Coordinates 51°7'8.499" N 4°4'41.618" E