La Tourelle, positioned at the highest point (269m above sea level) of the forest of Coat Liou to the north-east of Bourbriac, provides a prominent landmark and can be seen from miles around. It is maintained by the local council, and is in excellent condition. During the summer months, it is left open during the daytime and visitors are free to walk up the well-maintained spiral staircase in the centre onto the platform at the top which gives a spectacular 360 degree view of the north-west of Cotes d'Armor.

The tower is about one hundred years old; it has no particular historical or political significance, but was simply built by the owner of the forest as a point of interest.

Carry on past the tower, and you will have a chance to see the spectacular Roch ar Boch.