Tower of l'Esparra Monument · Riudarenes, Selva, Girona Fortified house from the late 12th or early 13th century, atop a hill next to the veïnat de l'Esparra, beside the riera de l'Esparra, a tributary of the riera de Santa Coloma; popularly known as the Torre de les Bruixes. The parish of Sant Martí de l'Esparra, on which this small centre depended within the viscounty of Cabrera, is documented since 1169. In 1294 King Jaume II forced Ponç Hug IV d'Empúries to lift the siege of the castle of l'Esparra. Photo: Antoni Grifol (CC BY-SA 4.0) What to see and do in Riudarenes