St. Martin's Cathedral
The construction of the Gothic St Martin's Cathedral was officially started in 1254, but is actually began in 1284 and was stopped in 1520. The Romanesque Cathedral was replaced piece by piece. The ambulatory, the rest of the choir, the tower, the transept and the nave were built in succession. But by the beginning of the 16th century, both money and enthusiasm had run out: influences of the Renaissance and of the Reformation made themselves felt. This explains why the nave was never completely finished: it did not have brick vaults, but a flat wooden ceiling, neither buttresses of sufficient height, nor any flying buttresses. Therefore, when, in 1674, town and country were hit by a tornado, the nave of the Cathedral collapsed. It was only in 1826 that the last debris were cleared away. Then, pulling down the entire church was even considered.