Festival of la Trinidad de Casas Altas Activity · Casas Altas, El Rincón de Ademuz, Valencia Image of Casas Altas, not of the place itself. Traditional festival in Casas Altas in which the villagers choose a large poplar from the bed of the River Turia and carry it shoulder-high to the square, where it is planted as a festive symbol. Photo: Alfredo SÁNCHEZ GARZÓN (CC BY-SA 4.0) What to see and do in Casas Altas