The Acropolis in Athens is the most famous historical site in Greece.it is also know as 'the sacred rock' and it is home to one of the most important monuments of ancient Greek civilisation,the Parhenon.The Parthenon is made of marble and is dedicated to the Greek goddess Athena.The Acropolis is visited by millions of tourists every and protect year.Restoration work is done all the time to conserve and protect the site from acid rain and air pollution.