<Tr> <Td_colspan="2"> The Acropolis of Athens, seen from the Hill of the Muses </Td> </Tr> <Tr> <Th> Location </Th> <Td> Athens, Attica, Greece </Td> </Tr> <Tr> <Th> Criteria </Th> <Td> Cultural: i, ii, iii, iv, vi </Td> </Tr> <Tr> <Th> Reference </Th> <Td> 404 </Td> </Tr>

What is the acropolis and what was it used for