Visit the Acropolis, perhaps Greece's most important landmark and one of the world's most-visited sites. Book this skip-the-ticket-line ticket to avoid the long wait at the ticket office. Get the most out of the experience with an audio guide on your phone and uncover the history of the city.

Receive your e-ticket by email and check your voucher for instructions on how to download your audio guide. Then, with your phone and headphones in hand, go directly to the South Entrance, close to the Acropolis metro station, and scan your ticket at the ticket-validating machines.

Put on your headphones and open the app on your phone to begin your tour. Listen as professional, licensed guides, and experts on storytelling present you with historical information and narrate original handpicked stories. Take as much time as you need. Walk into the Theater of Dionysus and then, see the UNESCO-listed Parthenon Temple, which is dedicated to Athena, the goddess of wisdom and war. Visit the Propylaea, the temple of Athena Nike, Erechtheion, and see the Odeon of Herodes Atticus.

Wander around all sides of the hill and get some marvelous views of the capital of Greece. See the surrounding mountains and the blue Aegean sea which surrounds Athens.