The Castle of Moncalieri, located in the Piedmont region of northern Italy, is a historical palace with a rich past. Initially constructed around 1100 as a fortress by Thomas I of Savoy, it was later transformed into a royal residence by Yolanda of Valois in the mid-15th century. This UNESCO World Heritage Site has witnessed numerous significant events, including royal marriages and the death of monarchs. Its architecture features a horseshoe shape with four massive towers and a beautiful Italian garden, reflecting the castle's evolution from a medieval stronghold to a Renaissance palace.