Filling an entire side of the large Piazza Castello in the center of Turin, the former Royal Palace is a relatively plain 17th-century building, at least on the outside.
But step inside to be dazzled by the Appartamento di Madama Felicità and 26 sumptuously decorated state apartments (Reali Appartamenti).
In the right wing, the former Royal Armory (Armeria Reale) contains one of the largest collections of arms and armor in Europe, with complete suits of armor and other items dating from the 15th to 19th centuries.
The library, which has a separate entrance to the far left, is one of Italy's most impressive.
