The cathedral had two predecessors. The first cathedral (called the Ludgerus Dom, 805-1377) stood to the north of the current cathedral; the second cathedral was built in the 10th or 11th century and was demolished during the construction of the third and current cathedral between 1225 and 1264. The imposing westwerk with its nearly identical towers was built as part of the second cathedral around 1192 and was incorporated into the current building. As a result, the cathedral is a mixture of styles, combining the Romanesque westwerk, old choir and west towers with the Gothic nave, transepts, high choir and ring of chapels.