l Bologna. Piazza Maggiore, with San Petronio Basilica and the City Hall. For a complete list, see Buil

Panoramic view of central Bologna.


Piazza Maggiore, with San Petronio Basilica and the City Hall.
For a complete list, see Buildings and structures in Bologna


The iconic Due Torri.


Antiques market and porticoes in Piazza Santo Stefano.


Sanctuary of the Madonna di San Luca.
Until the late 19th century, when a large-scale urban renewal project was undertaken, Bologna remained one of the few remaining large walled cities in Europe; to this day and despite having suffered considerable bombing damage in 1944, Bologna's 350 acres (141.64 ha) historic centre is Europe's second largest,[12] containing an immense wealth of important medieval, renaissance, and baroque artistic monuments.
Bologna developed along the Via Emilia as an Etruscan and later Roman colony; the Via Emilia still runs straight through the city under the changing names of Strada Maggiore, Rizzoli, Ugo Bassi, and San Felice. Due to its Roman heritage, the central streets of Bologna, today largely pedestrianized, follow the grid pattern of the Roman settlement. The original Roman ramparts were supplanted by a high medieval system of fortifications, remains of which are still visible, and finally by a third and final set of ramparts built in the 13th century, of which numerous sections survive. No more than twenty medieval defensive towers remain out of up to 180 that were built in the 12th and 13th centuries before the arrival of unified civic government. The most famous of the towers of Bologna are the central "Due Torri" (Asinelli and Garisenda), whose iconic leaning forms provide a popular symbol of the town.
The cityscape is further enriched by its elegant and extensive porticoes, for which the city is famous. In total, there are some 38 kilometres (24 miles) of porticoes in