The amphitheatre of Toulouse-Purpan is constructed on a filled structure, unlike those in Arles, Nîmes, and the Colosseum in Rome, where a hollow structure composed of vaults and pillars supports the tiers. The cavea (the rows of seats intended to receive the public) is fifteen meters wide. This area is separated from the arena by a wall and bound at the outside by a high wall covered in brick. The cavea is divided into equal segments compartmentalized by twenty-three arched horizontal corridors, the vomitoria.
The main entrance to the amphitheatre is located to the north of the arena and is 4.20 meters wide. The arch reproduces the height of the curved vault, which once covered the entry passage. The almond-like arena is sixty-two meters long by forty-six meters wide. Underneath this surface lies an underground network of drains, which leads to a vast ruined well in the center. This well catches the rainwater and allows for the rapid drainage of the arena, even today.
Abandoned at the end of the fourth century, the amphitheatre came to serve as a quarry. In this manner, the monument was completely stripped of its brick facing.
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.