The House of Nobility (Riddarhuset, “the House of Knights”) was built in 1641-1672 as a chamber of Estates of the Realm, and as such, a Swedish equivalent to the British House of Lords. After 1866, when the Riksdag of the Estates was replaced by the new parliament, the Swedish House of Nobility served as a quasi-official representation of the Swedish nobility, regulated by the Swedish government. Since 2003, it has been a private institution, which maintains records and acts as an interest group on behalf of the Swedish nobility, with the main purpose to maintain old traditions and culture.
The building design was started by the French-born architect Simon De la Vallée, but was killed by a Swedish nobleman in 1642. The plans were eventually finished by his son, Jean De la Vallée, in 1660. In the 18th century, the building was often used for public concerts. From 1731, public concerts were performed here by Kungliga Hovkapellet. The south end of the building carries the Latin inscription CLARIS MAIORUM EXEMPLIS, after the clear example of the forefathers, and holds a statue of Gustav II Adolph. North of the building is a park in which is a statue of Axel Oxenstierna. The architecture of the old main library in Turku, Finland was influenced by the Swedish House of Nobility.
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.