Tower of el Homenaje del Castillo de Aigües Monument · Aigües, L'Alacantí, Alicante Image of Aigües, not of the place itself. The only standing remnant of the medieval castle that rose beside Aigües, on the old frontier line between Castile and the Kingdom of Valencia, with views over the coast and the market gardens. Photo: Wikipedia / Wikimedia Commons (CC BY-SA) What to see and do in Aigües