Castel Del Monte was built in a place where they rarely get snow. It was built near the town Andria. It is also near these towns, Barletta, Trani, Bari, and Bisceglie. The castle was by the boot heel of Italy.
References:
http://www.castelli-puglia.org/en/monte.html
Barraclough, Geoffrey (editor). Atlas of World History. Michigan, Borders Press, 2001