Description

The Aventine Keyhole. From the exterior it’s an unsuspecting big green door, on closer inspection one of the most unique views of St. Peter’s dome in the city. Peep through the Aventine keyhole and you’ll see the Vatican perfectly framed by an immaculate row of hedges – it’s too good to be by accident! The door leads to the Piazza Knights of Malta, the piazza is not actually “Italy” as it holds extraterritorial status. So, technically you’re looking at two separate nation-states in one country. Coincidence or not, it’s our favourite view in Rome. Top tip: visit at night for a beautiful twinkling vista. (See more @Trafalgar's Hidden Gems Guide)

More details @ 4sq.com