The Pombaline Lower Town (called usually as Baixa) area covers about 235,620 square metres of central Lisbon. It is an elegant district, primarily constructed after the 1755 Lisbon earthquake. It takes its name from Sebastião José de Carvalho e Melo, the Prime Minister to Joseph I of Portugal from 1750 to 1777 and key figure of the Enlightenment in Portugal, who took the lead in ordering the rebuilding of Lisbon after the 1755 earthquake. The Marquis of Pombal imposed strict conditions on rebuilding the city, and the current grid pattern strongly differs from the organic streetplan that characterised the district before the Earthquake.
The Pombaline Baixa is one of the first examples of earthquake-resistant construction. Architectural models were tested by having troops march around them to simulate an earthquake. Notable features of Pombaline structures include the Pombaline cage, a symmetrical wood-lattice framework aimed at distributing earthquake force, and inter-terrace walls that are built higher than roof timbers to reduce fire contagion.
Today Baixa area has elegant squares, pedestrianized streets, cafes, and shops. Old tramcars, street performers, tiled Art Deco shopfronts, elaborately decorated pastry shops, and street vendors selling everything from flowers to souvenirs, all lend a special charm to the area.
Baixa was placed on Portugal's tentative list of potential World Heritage Sites in 2004.
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.