The ruins of the ancient town of Castrotorafe, popularly known as Zamora la Vieja, are in San Cebrian de Castro, emplacement already located in the 12th century.
It was a medieval defensive site which appeared on the banks of Esla River. It keeps the walls built with slate masonry and mortar, and has 4.709 square meters, including the castle, the hermitage and the walls.
The best preserved is the castle, of two enclosures with irregular trapezoid shape. Inside of it, practically ruined, built with different materials and with a floor similar to the outside.
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.