Trentino-Alto Adige is a region in northern Italy bordering Switzerland and Austria. It’s known for medieval castles such as Schloss Tirol, Castel Roncolo and Castel d’Appiano. The region encompasses part of the Dolomites, a section of the Italian Alps known for sawtooth limestone peaks. Trento, the region’s capital, has Renaissance palaces with frescoed facades and Buonconsiglio Castle, home to art collections.