St. Lazare Cathedral stands in the highest and best fortified corner of the town, and through external modifications that have been applied to the building the appearance has been much altered by the addition of a Gothic tower, a spire and side chapels in the 15th century. The cathedral still contains a highly Romanesque appearance on the interior. In 1462, Bishop Jean Rolin had a new belfry built in replacement of the Romanesque one that was unfortunately destroyed by a bolt of lightning.