Castel Gandolfo - Streets and Squares Piazza della Libertà This is the real beating heart of the historic center. Characterized by a medieval structure, it houses the seventeenth-century Collegiate Church of San Tommaso da Villanova and the Papal Palace.
Ariccia - Streets and Squares Piazza di Corte In the town of Ariccia, it was designed from 1661 by great architects such as Gian Lorenzo Bernini and Carlo Fontana.