St. Alban's was sacked and burnt down on the evening of 28 August 1552 during the Second Margrave War by Albert Alcibiades, Margrave of Brandenburg-Kulmbach. It was not rebuilt. A chapel was constructed from the ruins of the church , which was in its turn severely damaged in the Thirty Years' War and completely destroyed during the siege of Mainz in 1793. In 1802 St. Alban's Abbey, which until then had retained a nominal existence, was formally dissolved under Napoleon.