Keyhole Peeping Across Three Nations in Rome, Italy
While you're wandering around Rome looking at ridiculously old things, climb up the Aventine Hill to the Piazza Dei Cavalieri. Note the orange trees and rose bushes of unimaginable beauty on your way there. Once in the piazza, you're technically in another country—the Republic of Italy recognizes the HQ of the Knights of Malta as a sovereign nation. Look for a large door with a well-worn keyhole, and go ahead—you know you want to—take a peek. Your gaze will take you through a well-manicured garden, across Rome, and will come to rest on the dome of St. Peter's, located in yet another sovereign nation—Vatican City. Eccoci! Three-nation keyhole peeping.