Lake Como is so popular among celebrities, it could practically pass as Hollywood’s prettier sister. Exhibit A: John Krasinski and Emily Blunt enjoyed their wedding and honeymoon at the waterside Villa d’Este in 2010. The estate is one of the most historic and lavish stays in Lombardy, featuring eight tennis courts, velvet- and silk-trimmed suites, and an iconic floating pool that overlooks the lake and surrounding mountains.