The Castle of Castro Laboreiro (Castelo de Castro Laboreiro) is located in the civil parish of Castro Laboreiro, in the municipality of Melgaço. It is the ruins of a Romanesque castle with a belt of walls around a central keep with a cistern.
In the 9th century, Alfonso III of Asturias, donated the settlement of Castro Laboreiro and the castro to Count Hermenegildo, grandfather of Saint Rudesind, for his defeat of the Visigoth King of Hispania, Witiza. During the reign of the Galician count, the castro was adopted as a castle, but would eventually fall into the possession of the Moors.
In 1144, Afonso Henriques reconquered the redoubt, and from 1145 his forces began the task of restoring and expanding the defenses: it was Sancho I of Portugal who finally completed the project in the 12th century. The efforts were for not, as the Leonese raised the castle in 1212, during their invasion. In 1290, Denis of Portugal began the reconstruction, with emphasis on defense from its neighbors.
The castle had, around 1506, five rectangular towers surrounding their central keep, which was preceded by the cistern in the north. Another, unidentified, construction was erected to the south.
In a surprise attack, Baltazar Pantoja took the castle after four hours of skirmishes in May 1666. He left Governor Pedro Esteves Ricarte in charge of the citadel, until it was retaken by the 3rd Count of Prado, Francisco de Sousa.
The King, citing its historical importance, decided to conserve the castle, in a response to his partner Michel Lescole, rather than deactivate it. Following the restoration of peace, in 1715, the castle was decommissioned. In 1801, troops occupied and defended the castle using four military pieces.
The castle is located on an isolated hilltop 1,033 metres above the Minho and Lima Rivers. It has an oval plan, oriented north-south, with the remains of the walls erected over cliffs and crags, sometimes zig-zagging, which corresponded to the ancient towers.
The principal entrance is the Gate of the Sun which opens to the east, while the 'traitors' gate', the Gate of the Frog as it was known, in the north. The east-west courtyard is closed and accessible from a footbridge that was used to gather cattle and property during invasions. It is around these walls that ruins of the ancient cistern remain.
References:The Clementinum is a historic complex of buildings in Prague. Until recently the complex hosted the National, University and Technical libraries, the City Library also being located nearby on Mariánské Náměstí. The Technical library and the Municipal library have moved to the Prague National Technical Library at Technická 6 since 2009. It is currently in use as the National Library of the Czech Republic.
Its history dates from the existence of a chapel dedicated to Saint Clement in the 11th century. A Dominican monastery was founded in the medieval period, which was transformed in 1556 to a Jesuit college. In 1622 the Jesuits transferred the library of Charles University to the Klementinum, and the college was merged with the University in 1654. The Jesuits remained until 1773, when the Klementinum was established as an observatory, library, and university by the Empress Maria Theresa of Austria.