Soon after 1300 AD the Great Guild of the crossbowmen of Brussels receives a piece of land on a sandy hill outside the city walls to build a wooden chapel devoted to the Holy Virgin.
In 1348 a devote woman, Beatrijs Soetkens, sees that a statue of the Blessed Virgin was being neglected. She brought it to Brussels, propelled by a mysterious force along the rivers, the sails of the boat not being deployed.
She was welcomed by Duke John III of Brabant and the miraculous statue was entrusted to the chapel of the crossbowmen, who promised to build a church considering the large number of pilgrims. This is the present day church which is a beautiful example of flamboyant gothic.