The Roman city of Cáparra is located in the valley of the River Alagón. In Roman times it was in the province of Lusitania within the Conventus Iuridicus Emeritensis, whose capital was Colonia Augusta Emerita (modern day Mérida). It was approached via the Roman road known as the Vía de la Plata and is now permanently abandoned.
Its excellent location led to Roman settlement achieving the category of municipium under Vespasian, around the year AD 74. From that point on, Cáparra really began to develop as a city. Its decline took place during the High Middle Ages, when it began to lose its population, becoming even more depopulated after the Moorish invasion.
The most representative element of this ancient Roman city is its tetrapylon or quadrifons arch, i.e. a four-gate arch. This arch was found in the centre of the city, crossed by the Roman Silver Route.
The tetrapylon arch has large ashlar foundations with a dressed stone finish, while the capitals finish in a cornice supporting an archivolt that in turn supports the groin vault. This arch is the only one of its kind in the Iberian Peninsula.
The Roman bridge of Cáparra is part of the monumental site of Cáparra. The work is not established in time and consists of four arches, of which only the central two can be considered fully Roman.
The arches are rounded and the vaults come out from a projecting course. Upriver, one of the cutwaters of the piles in the river’s course is triangular and the other trapezoidal, while the downstream face is flat. The work is clad in granite masonry arranged in somewhat irregular rows.
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.