Castello di Fénis, Aosta Valley

Castello di Fénis rises like a storybook vision in the Aosta Valley, its crenellated towers and double encircling walls fully intact since the 14th century. The castle’s 500 square meters of frescoes, including the famed Judgment of Solomon cycle, depict courtly life with vivid detail. Located at 1,200 meters altitude, it commands alpine views that no other castle on this list can match—while #3’s Milanese fortress sits at just 122 meters above sea level. Its drawbridge and 30-meter-high keep remain functional, offering a tangible link to 1342, when the Challant family completed the structure. A rare example of medieval military architecture preserved without later modifications.