St. Regis Grand Hotel, Rome, Italy
Established by famed hotelier Cesar Ritz at the request of the Italian president in 1894, this Roman jewel is said to have its foundation over the Baths of Diocletian. The hotel, built on land belonging to Pope Sistus V, recently underwent a $35 million renovation requiring 450 workmen, including 151 skilled craftsmen and one million man hours of work.