Solid church in granite built inside the medieval town walls. Work began in 1488 under the guidance of Biscay master Tomé de Tolosa, and using parts of a primitive Romanesque chapel (remains are visible in the north side); it pursued slowly, until the completion of the tower of the main façade in 1556. Important architects involved in the construction include João de Tolosa and Pero Galego. Inside, the building is a basilica with main nave and two aisles, and is notable for its inlaid ceiling (1565) showing oriental influences. The Mareantes Chapel, built by the corporation of seafarers, is one of the earliest renaissance works in Portugal. The church was classified as a National Monument on June 16, 1910.
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The Odeon of Herodes Atticus is a stone theatre structure located on the southwest slope of the Acropolis of Athens. It was built in 161 AD by the Athenian magnate Herodes Atticus in memory of his wife, Aspasia Annia Regilla. It was originally a steep-sloped theater with a three-story stone front wall and a wooden roof made of expensive cedar of Lebanon timber. It was used as a venue for music concerts with a capacity of 5,000. It lasted intact until it was destroyed and left in ruins by the Heruli in 267 AD.
The audience stands and the orchestra (stage) were restored using Pentelic marble in the 1950s. Since then it has been the main venue of the Athens Festival, which runs from May through October each year, featuring a variety of acclaimed Greek as well as International performances.