Tour du Guet

The Tour du Guet is a 13th-century watchtower in Calais, Pas-de-Calais, northern France.

Located on Place d'Armes behind the Hotel de Ville, it is 39 metres (128 ft) in height, and features a dovecote for carrier pigeons.

The tower dates from 1214, when Philip I, Count of Boulogne built fortifications in the town.

[1] Damaged by a 1580 earthquake, it was used as a lighthouse until 1848, when it became a watch tower.

[2] During World War I, it served as a military post.