Palace of Vivel Monument · La Vall d'Uixó, La Plana Baixa, Castellón Image of La Vall d'Uixó, not of the place itself. A former palace in La Vall d'Uixó, in the Plana Baixa, one of the town's most notable historic buildings, together with its traditional aqueduct. It was built around 1920 as a summer house, and borders the séquia major and the old Hort de Soguers. Photo: Simon Burchell (CC BY-SA 4.0) What to see and do in La Vall d'Uixó