The Zappeion is a palace-like building in the National Gardens of Athens in the heart of Athens. It is generally used for meetings and ceremonies, both official and private. The cornerstone was laid in 1874. Designed by Danish architect Theophil Hansen, it was finally opened in 1888.
Zappeion was used during the 1896 Summer Olympics as the main fencing hall. A decade later, at the 1906 Intercalated Games, it was used as the Olympic Village. It served as the first host for the organizing committee (ATHOC) for the 2004 Games from 1998 to 1999 and served as the press center during the 2004 games. In 1938, the Athens Radio Station, the country's first national broadcaster, began operating in the premises.
References:
The Roman Theatre of Mérida is a construction promoted by the consul Vipsanius Agrippa in the Roman city of Emerita Augusta, capital of Lusitania (current Mérida). It was constructed in the years 16 to 15 BCE. One of the most famous and visited landmarks in Spain, the Roman Theatre of Mérida is regarded as a Spanish cultural icon and was chosen as one of the 12 Treasures of Spain.
The theatre has undergone several renovations, notably at the end of the 1st century or early 2nd century CE (possibly during the reign of Emperor Trajan), when the current facade of the scaenae frons was erected, and another in the time of Constantine I (between 330 and 340), which introduced new decorative-architectural elements and a walkway around the monument. Following the theatre"s abandonment in Late Antiquity, it was slowly covered with earth, with only the upper tiers of seats (summa cavea) remaining visible.