center is small, and most Late-Medieval and Renaissance buildings have been restored to their original pastel colours and wooden balconies. Part of the medieval city walls is still visible in Piazza Fiera, along with a circular tower. Once, these walls encircled the entire city and were connected to the Castello del Buonconsiglio. The main monuments of the city include: Duomo (Cathedral of Saint Vigilius), a Romanesque-Gothic cathedral of the twelfth-thirteenth century, built on top of a late-Roman basilica (viewable in an underground crypt). Piazza Duomo, on the side of the cathedral, with frescoed Renaissance buildings and the Late Baroque Fountain of Neptune (Fontana di Nettuno) built in 1767–1768. Church of Santa Maria Maggiore (1520), site of the preparatory congregations of the Third Council of Trent (April 1562 – December 1563). It was built for Bishop Bernardo Clesio by the architect Antonio Medaglia in Renaissance-Gothic style. The façade has a notable 16th-century portal, while the interior has works by Giambettino Cignaroli and Moroni. Castello del Buonconsiglio (Buonconsiglio Castle), which includes a museum and the notable Torre dell'Aquila, with a cycle of fine Gothic frescoes depicting the months, commissioned by the prince-bishop Georg von Lichtenstein. Church of San Pietro (12th century) It has a neo-Gothic façade added in 1848–1850. Church of Sant'Apollinare, erected in the 13th century at the feet of the Doss Trento hill. Church of San Lorenzo (12th century). It has a Romanesque apse. Torre Verde (Green Tower), along the former transit path of the Adige river, is said to be where persons executed in the name of the Prince-Bishop were deposited in the river. Palazzo delle Albere (Palace of the Trees), a Renaissance villa next to the Adige river built around 1550 by the Madruzzo family, now hosting a modern art museum. Palazzo Pretorio, next to the Duomo, of the 12th century, with a bell tower (Torre Civica) of the thirteenth century (it now hosts a collection of baroque paintings of religious themes). It was the main Bishops' residence until the mid-13th century. Palazzo Salvadori (1515). Palazzo Geremia (late 15th century). It has a Renaissance exterior and Gothic interiors. Palazzo Lodron, built during the Council of Trent. The interior has a large fresco cycle. Various underground remains of the streets and villas of the Roman city (in Via Prepositura and Piazza Cesare Battisti). Trento also sports modernist architecture, including the train station and the central post office, both by