The city of Porto (Oporto), built along the hillsides overlooking the mouth of the Douro river, is an outstanding urban landscape with a 2,000-year history. Its continuous growth, linked to the sea (the Romans gave it the name Portus, or port), can be seen in the many and varied monuments, from the cathedral with its Romanesque choir, to the neoclassical Stock Exchange and the typically Portuguese Manueline-style Church of Santa Clara.
Archaeological excavations have revealed human occupation at the mouth of the Douro River since the 8th century BC, when there was a Phoenician trading settlement there. By the 5th century the town had become a very important administrative and trading centre. In the succeeding centuries it was subjected to attacks and pillage by successive groups, including Swabians, Visigoths, Normans, and Moors. By the early 11th century, however, it was firmly established as part of the Castilian realm. Expansion came in the 14th century with the construction of massive stone town walls to protect its two urban nuclei: the original medieval town and the hitherto extramural harbour area. The Historic Centre of Oporto is located within the line of these Fernandine walls (named after Dom Fernando, in whose reign they were completed in 1376), together with some smaller areas that retain their medieval characteristics. This area conserves to a large extent Oporto’s medieval town plan and urban fabric, along with some later monumental insertions as well as the two remaining sections of the Fernandine walls.
In this area are many important ecclesiastical buildings such as the cathedral – whose Romanesque core dates to the 12th century – and fine churches in various styles. The historic centre also has a number of outstanding public buildings, including the São João theatre (1796-1798; 1911-1918) and the former prison “Cadeia da Relação” (1765-1796). Among the important later structures are Palácio da Bolsa (1842-1910) and São Bento railway station (1900-1916). This rich and varied architecture eloquently expresses the cultural values of succeeding periods – Romanesque, Gothic, Renaissance, Baroque, neoclassical, and modern. The active social and institutional tissue of the town ensures its survival as a living historic centre.
The historical centre was proclaimed a World Heritage Site by UNESCO in 1996.
The Palazzo Colonna is a palatial block of buildings built in part over ruins of an old Roman Serapeum, and has belonged to the prestigious Colonna family for over twenty generations.
The first part of the palace dates from the 13th century, and tradition holds that the building hosted Dante in his visit to Rome. The first documentary mention notes that the property hosted Cardinal Giovanni and Giacomo Colonna in the 13th century. It was also home to Cardinal Oddone Colonna before he ascended to the papacy as Martin V (1417–1431).
With his passing, the palace was sacked during feuds, and the main property passed into the hands of the Della Rovere family. It returned to the Colonna family when Marcantonio I Colonna married Lucrezia Gara Franciotti Della Rovere, the niece of pope Julius II. The Colonna"s alliance to the Habsburg power, likely protected the palace from looting during the Sack of Rome (1527).
Starting with Filippo Colonna (1578–1639) many changes have refurbished and create a unitary complex around a central garden. Architects including Girolamo Rainaldi and Paolo Marucelli labored on specific projects. Only in the 17th and 18th centuries were the main facades completed. Much of this design was completed by Antonio del Grande (including the grand gallery), and Girolamo Fontana (decoration of gallery). In the 18th century, the long low facade designed by Nicola Michetti with later additions by Paolo Posi with taller corner blocks (facing Piazza Apostoli) was constructed recalls earlier structures resembling a fortification.
The main gallery (completed 1703) and the masterful Colonna art collection was acquired after 1650 by both the cardinal Girolamo I Colonna and his nephew the Connestabile Lorenzo Onofrio Colonna and includes works by Lorenzo Monaco, Domenico Ghirlandaio, Palma the Elder, Salviati, Bronzino, Tintoretto, Pietro da Cortona, Annibale Carracci (painting of The Beaneater), Guercino, Francesco Albani, Muziano and Guido Reni. Ceiling frescoes by Filippo Gherardi, Giovanni Coli, Sebastiano Ricci, and Giuseppe Bartolomeo Chiari celebrate the role of Marcantonio II Colonna in the battle of Lepanto (1571). The gallery is open to the public on Saturday mornings.
The older wing of the complex known as the Princess Isabelle"s apartments, but once housing Martin V"s library and palace, contains frescoes by Pinturicchio, Antonio Tempesta, Crescenzio Onofri, Giacinto Gimignani, and Carlo Cesi. It contains a collection of landscapes and genre scenes by painters like Gaspard Dughet, Caspar Van Wittel (Vanvitelli), and Jan Brueghel the Elder.
Along with the possessions of the Doria-Pamphilij and Pallavacini-Rospigliosi families, this is one of the largest private art collections in Rome.