sentences:  The abbey's estates were taken over by the Electors of Saxony in 1551 and given to the school at Pforta, which had just been re-founded, and which retained possession of them until the end of World War II.Since the roof of the former abbey church was struck by lightning and destroyed in 1722, several attempts were made later to demolish the rest of the building.Nevertheless, the remaining ruins are still of interest, particularly the Late Romanesque crypt.