Lucca is a city and comune in Tuscany, Central Italy, on the Serchio, in a fertile plain near the Ligurian Sea. It is the capital of the Province of Lucca. It is famous for its intact Renaissance-era city walls.

The walls encircling the old town remain intact, even as the city expanded and modernized, unusual for cities in the region. Initially built as a defensive rampart, once the walls lost their military importance they became a pedestrian promenade, the Passeggiata delle Mura Urbane, a street atop the walls linking the bastions. It passes through 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; and over the gates (Porte): San Donato, Santa Maria, San Jocopo, Elisa, San Pietro, and Sant'Anna. Each of the four principal sides of the structure is lined with a different tree species than 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 ancient Roman amphitheater; but also Piazzale Verdi; Piazza Napoleone'; and Piazza San Michele.