The Fortezza (fortress) is the citadel of the city of Rethymno in Crete. It is built on a hill which was the site of ancient Rhithymna's acropolis. Between the 10th and 13th centuries, the Byzantines established a fortified settlement to the east of the hill. It was called Castrum Rethemi, and it had square towers and two gates. The fortifications were repaired in the beginning of the 13th century.
Following the fall of Cyprus to the Ottomans in 1571, Crete became the largest remaining Venetian overseas possession. Since Rethymno had been sacked, it was decided that new fortifications needed to be built to protect the city and its harbour. The new fortress, which was built on the Paleokastro hill, was designed by the military engineer Sforza Pallavicini according to the Italian bastioned system.
Construction began on 13 September 1573, and it was complete by 1580. Although the original plan had been to demolish the old fortifications of Rethymno and move the inhabitants into the Fortezza, it was too small to house the entire city. The walls along the landward approach to the city were left intact, and the Fortezza became a citadel housing the Venetian administration of the city. It was only to be used by the inhabitants of the city in the case of an Ottoman invasion.
On 29 September 1646, during the Fifth Ottoman–Venetian War, an Ottoman force besieged Rethymno, and the city's population took refuge in the Fortezza. Conditions within the citadel deteriorated, due to disease and a lack of food and ammunition. The Venetians surrendered under favourable terms on 13 November.
The Ottomans did not make any major changes to the Fortezza, except the construction of a ravelin outside the main gate. They also built some houses for the garrison and the city's administration, and they converted the cathedral into a mosque. The fort remained in use until the early 20th century.
Large-scale restoration work has been under way since the early 1990s. The Fortezza is managed by the Ministry of Culture and Sports, and it is open to the public. The Ottoman ravelin now houses the Archaeological Museum of Rethymno.References:
The Château d'Olhain is probably the most famous castle of the Artois region. It is located in the middle of a lake which reflects its picturesque towers and curtain walls. It was also a major stronghold for the Artois in medieval times and testimony to the power of the Olhain family, first mentioned from the 12th century.
The existence of the castle was known early in the 13th century, but the present construction is largely the work of Jean de Nielles, who married Marie d’Olhain at the end of the 15th century.
The marriage of Alix Nielles to Jean de Berghes, Grand Veneur de France (master of hounds) to the King, meant the castle passed to this family, who kept it for more than 450 years. Once confiscated by Charles Quint, it suffered during the wars that ravaged the Artois. Besieged in 1641 by the French, it was partly demolished by the Spaniards in 1654, and finally blown-up and taken by the Dutch in 1710. Restored in 1830, it was abandoned after 1870, and sold by the last Prince of Berghes in 1900. There is also evidence that one of the castles occupants was related to Charles de Batz-Castelmore d'Artagnan, the person Alexandre Dumas based his Three Musketeers charictor d'Artagnan on.
During the World War I and World War II, the castle was requisitioned first by French troops, then Canadian and British soldiers. The current owner has restored the castle to its former glory.