Sommeregg is a medieval castle near Seeboden situated in the foothills of the Nock Mountains. The castle was probably erected in the 12th century. The Lords of Sommeregg then served as ministeriales of Count Otto II of Ortenburg, who ruled over extended estates in Upper Carinthia, rivalling with the House of Gorizia and the Salzburg archbishops.
In the 14th century, the Lords of Sommeregg achieved the knightly status of Ortenburg burgraves and castellans with comprehensive administrative and military responsibilities in the lordship of the manor. When the Counts of Ortenburg became extinct in 1418, their possessions passed to the Counts of Celje in Carniola, who left the administration of the remote Upper Carinthian estates to local stadtholders. In 1442 the Styrian noble Andreas von Graben by marriage inherited the Sommeregg burgraviate. His rights were acknowledged by Count Frederick II of Celje and the castle became a residence of the House of Graben.
The dynasty maintained the title of Sommeregg burgraves, even when the last Celje count Ulrich II was murdered in 1456. After a long dispute with Count John II of Gorizia, the former Ortenburg possessions fell to the Habsburg emperor Frederick III, who confirmed the feudal rights of the Graben family. Andreas von Graben was succeeded by his son Virgil in 1463, however, in 1487 the castle was occupied and devastated by Hungarian forces under King Matthias Corvinus on his campaign against the Austrian Habsburgs. Afterwards Virgil von Graben had the fortress rebuilt in its current appearance.
Through Virgil's niece and heiress Rosina (d. 1534), Sommeregg passed to the Bavarian Lords of Rain. In 1550 it was purchased by the Carinthian noble Christoph Khevenhüller, whose descendants held the castle until 1628. The Sommeregg manor was dissolved upon the Revolution of 1848.References:
The eight towns in south-eastern Sicily, including Ragusa, were all rebuilt after 1693 on or beside towns existing at the time of the earthquake which took place in that year. They represent a considerable collective undertaking, successfully carried out at a high level of architectural and artistic achievement. Keeping within the late Baroque style of the day, they also depict distinctive innovations in town planning and urban building. Together with seven other cities in the Val di Noto, it is part of a UNESCO World Heritage Site.
In 1693 Ragusa was devastated by a huge earthquake, which killed some 5,000 inhabitants. Following this catastrophe the city was largely rebuilt, and many Baroque buildings from this time remain in the city. Most of the population moved to a new settlement in the former district of Patro, calling this new municipality 'Ragusa Superiore' (Upper Ragusa) and the ancient city 'Ragusa Inferiore' (Lower Ragusa). The two cities remained separated until 1926, when they were fused together to become a provincial capital in 1927.