Tower of Cesson

The Tower of Cesson is a cylindrical granite fortification in Saint-Brieuc that rises on a promontory overlooking the bay and river mouth below. The structure features thick stone walls typical of medieval military architecture with multiple interior levels throughout its height.

A Duke of Brittany ordered construction of the fortification between 1395 and 1407 to control strategic access along the river. The tower was part of a larger defense system protecting the port city from maritime threats.

The structure served as a symbol of Saint-Brieuc's maritime power and remains important to local identity as a reminder of the city's seafaring history. People in the area view it as a connection to their ancestors' role in controlling the coast.

The fortress has been closed to visitors since 2021, so you can only view it from outside and explore the surrounding area. Plan your visit for clear weather to best see the structure and appreciate its position overlooking the bay.

The interior contains openings facing three different compass directions, showing how precisely the defense was planned for observation and control. These carefully positioned windows allowed defenders to monitor multiple approaches to the river and harbor simultaneously.

Location: Saint-Brieuc

Address: 1, chemin de l'Écluse

GPS coordinates: 48.52870,-2.72303

Latest update: December 8, 2025 21:01