Leaving the small sheltered port of Pors Poulhan, take a walk in the valley of Tréouzien, a quiet and wooded place, which at the end of the path will make you discover its 19th century heritage.ème century, a beautiful watermill renovated in the 21ème and open to the public since 2015. Two ponds around this beautiful building, as well as an impressive dovecote, will transport you back to the time of the millers.