http://agathe.gr/guide/history_of_the_excavations.html
History of the Excavations Some of the Agora monuments have never been fully buried and were explored by the Archaeological Society starting in the 19th century: the Stoa of Attalos (1859–1862, 1874, and ... History of the Excavations Some of the Agora monuments have never been fully buried and were explored by the Archaeological Society starting in the 19th century: the Stoa of Attalos (1859–1862, 1874, and 1898–1902), the Giants and Tritons of the Odeion (1859, 1874, and 1912), and the West Side (1907–1908). The trench for the extension of the Athens–Piraeus railway in 1890–1891 also exposed remains of buildings and sculptures. The American excavations were begun on May 25, 1931 and have continued in a series of yearly campaigns since then with a hiatus during the Second World War (Figs. 71–75). In 1953–1956 the Stoa of Attalos was restored to serve as the site museum, and the Church of the Holy Apostles was restored in 1954–1956. A program of landscaping the site as an archaeological park was also undertaken at this time.
