The Castle of Avio (also known as the Castle of Sabbionara, Italian: Castello di Avio, old German: Schloß Aue) is a medieval castle in the comuneAvio, Trentino, northern Italy. It is currently hold by the Fondo per l'Ambiente Italiano (FAI). It is one of the several castles commanding the Vallagarina valley of the Adige River. It features several rooms with medieval frescoes.