Castel Gandolfo, an extension of the Vatican that has housed the summer palazzo of Popes since the Rennaissance, is but a handful of kilometers from the Villetta, and should not be missed. Drop by for a ‘spuntino’ in the charming town, enjoy the unique view of the volcanic Lago Gandolfo below, or perhaps, if you time it right, you can participate in a Sunday mass officiated by the Pope himself, from his balcony above the town’s main piazza.