Ponte Vella is a medieval footbridge built on Roman foundations in Ourense. At one time, it was considered to be the biggest bridge in all of Spain.
The original bridge across the Minho River was built during the first century rule of Emperor Augustus though other sources state that it was built during the Trajan period. A mention is made of this bridge in the will of Doña Urraca, where it is said that it was repaired with funds provided by Ferdinand III. From the Middle Ages, it has provided access to the city of Ourense for trade and pilgrimage.
The structure was rebuilt in 1230 by Bishop Lorenzo on Roman foundations (original piers), and repaired in 1449 by Bishop Pedro de Silva. It then measured 402 m long, with an arch span of 48 m. However, the main arch collapsed in 1499 and the bridge was rebuilt in 1679 to a length of 370 metres with seven arched spans, the main span measuring 43 metres.
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.