Tivenys Winter Main Festival Activity · Tivenys, Baix Ebre, Tarragona Image of Tivenys, not of the place itself. Tivenys's main festival, in honour of Sant Miquel Arcàngel and Sant Benet Abat, is held on 29 and 30 September, in a village founded in 1148 after the reconquest of Tortosa. Its assut (weir), construction of which began in 1440, was declared a national cultural asset in 2002. Photo: Viquipèdia / Wikimedia Commons (CC BY-SA) What to see and do in Tivenys