Castle of Collfred Monument · Artesa de Segre, Noguera, Lleida Image of Artesa de Segre, not of the place itself. Collfred is a population entity of the municipality of Artesa de Segre (Noguera), located at the foot of the puig de Grialó, on the left bank of the river Segre, at the eastern end of the term; it was an independent municipality until the mid-19th century. The castle of Collfred has been documented since the 13th century and belonged to the lordship of the Rubió family; next to it stands the parish church of Sant Martí, in Romanesque style with a single nave. Photo: Isidre blanc (CC BY-SA 4.0) What to see and do in Artesa de Segre