on Paper Art. Film and television Mauro Bolognini's 1958 film Giovani mariti, with Sylva Koscina, is set and was filmed in Lucca. Top Gear filmed the third episode of the 17th season here. Architecture Lucca is also known for its marble deposits. After a fire in the early 1900s, the West Wing of the Legislative Assembly of Ontario was rebuilt with marble sourced in Lucca. The floor mosaic in the West Wing was hand-laid and is constructed entirely of Italian, Lucca marble. Main sights Walls, streets, and squares The walls encircling the old town remain intact, even though the city has expanded and been modernised, which is unusual for cities in this region. These walls were built initially as a defensive rampart which, after losing their military importance, became a pedestrian promenade (the Passeggiata delle Mure Urbane) atop the walls which not only links the Bastions of Santa Croce, San Frediano, San Martino, San Pietro/Battisti, San Salvatore, La Libertà/Cairoli, San Regolo, San Colombano, Santa Maria, San Paolino/Catalani and San Donato but also passes over the gates (Porte) of San Donato, Santa Maria, San Jacopo, Elisa, San Pietro, and Sant'Anna. Each of the four principal sides of the structure is lined with a tree species different from the others. The walled city is encircled by Piazzale Boccherini, Viale Lazzaro Papi, Viale Carlo Del Prete, Piazzale Martiri della Libertà, Via Batoni, Viale Agostino Marti, Viale G. Marconi (vide Guglielmo Marconi), Piazza Don A. Mei, Viale Pacini, Viale Giusti, Piazza Curtatone, Piazzale Ricasoli, Viale Ricasoli, Piazza Risorgimento (vide Risorgimento), and Viale Giosuè Carducci. The town includes a number of public squares, most notably the Piazza dell'Anfiteatro, (site of the ancient Roman amphitheater), the Piazzale Verdi, the Piazza Napoleone, and the Piazza San Michele. Palaces, villas, houses, offices, and museums Ducal Palace: built on the site of Castruccio Castracani's fortress. Construction was begun by Ammannati in 1577–1582 and continued by Juvarra in the eighteenth century Pfanner Palace Villa Garzoni, noted for its water gardens Casa di Puccini: House of the opera composer, at the nearby Torre del Lago, where the composer spent his summers. A Puccini opera festival takes place every July–August Torre delle Ore: ("The Clock Tower") Guinigi Tower and House: Panoramic view from tower-top balcony with oak trees National Museum of Villa Guinigi National Museum of Palazzo Mansi Orto Botanico Comunale di Lucca: botanical garden dating from 1820 Academy of Sciences (1584)