Palais Augarten was constructed in the late 17th century by Johann Bernhard Fischer von Erlach on the site of a hunting château and gardens. In 1780 this palace came into the possession of Joseph II, Holy Roman Emperor. Until the beginning of the twentieth century it remained in the possession of the Habsburg family. During this period, and especially in the nineteenth century, many balls were held in the palace, and a salon was opened. Among the guests at that time were Richard Wagner, Franz Liszt, and Hans Makart.
The greatest ball in the Palais Augarten took place on the occasion of the Viennese World's Fair of 1873; among the guests were Emperor Francis Joseph I and Czar Alexander II of Russia. In 1897 the palace was significantly remodelled for the family of Archduke Otto, the nephew of Emperor Francis Joseph.
Despite extensive damage suffered during World War II, the palace has been maintained almost in its original appearance, and many of the original furnishings can still be found there. Today, Palais Augarten is the home and rehearsal space of the Vienna Boys' Choir, who also have their own school there. The palace is located on 130-acre Augarten park, which is the oldest Baroque garden in Vienna.
References:The ancient Argos Theater was built in 320 BC. and is located in Argos, Greece against Larissa Hill. Nearby from this site is Agora, Roman Odeon, and the Baths of Argos. The theater is one of the largest architectural developments in Greece and was renovated in ca 120 AD.
The Hellenistic theater at Argos is cut into the hillside of the Larisa, with 90 steps up a steep incline, forming a narrow rectilinear cavea. Among the largest theaters in Greece, it held about 20,000 spectators and is divided by two landings into three horizontal sections. Staircases further divide the cavea into four cunei, corresponding to the tribes of Argos A high wall was erected to prevent unauthorized access into the theatron and may have helped the acoustics, but it is said the sound quality is still very good today.
Around 120 CE, both theaters were renovated in the Roman style.