Possible construction of the St. Stephen Cathedral Laying of the first stone of Notre-Dame Construction of the Choir and its double ambulatory Consecration of the master altar Construction of last three spans of the nave, aisles and stands Foundations of the Façade and first two spans of the nave Construction of the high gallery and both towers of the façade Construction of the West Rose Construction of the first spire Construction of the North Rose Construction of the South Rose The first spire was dismantled Carpenter Bellu selected to built the new spire Dedication of the Cathedral by Archbishop Darboy of Paris Restoration of the great organ Fire The spire collapsed under the fire Fundraising campaign to rebuild the Cathedral