Wikipedia: The Zappeion Building is located in the National Gardens of Athens (Greek: Εθνικός Κήπος) in the heart of Athens. It was used during the 1896 Summer Olympics as the main Fencing Hall. In the 1906 Summer Olympics it was used as the Olympic Village.[5] Many important events of Greek history have taken place at the Zappeion, such as the signing of the documents formalizing Greece's accession to the European Union on January 1, 1981. more...