The ancient Odeon of Thasos, an conservatory in the ancient city of Thassos was built in Roman times. The building, which was discovered in 1929 gives us the impssion of a monumental building even though its biggest part is under the modern road of the town with only its lower part visible and the first rows of seats. It is certain that in ancient times it would have been an imposing edifice. It is made of marble and situated in the south of the ancient Agora.
The building consists of a hollow with two rows of seats, forming a semicircle, one orchestra and a stage structure. The orchestra is not paved and from the byways survived the two walls that support the ground at the edges of the hollow.
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.