This gargoyled, 50m-high Flamboyant Gothic belfry was built for the cathedral between 1440 and 1466. Its spire was added in the 19th century, and in 1863 it was topped off with the gold statue of Notre Dame de l’Aquitaine (Our Lady of Aquitaine). Scaling the tower’s 233 steep, narrow steps rewards you with a spectacular city panorama. Only 19 visitors are allowed up at any one time; buy time-slot tickets in advance online.