Do

Near Athens in Glyfada (50 min by tram from the center), there is the Sea Turtle Rescue Society Archelon. They are regularly looking for volunteers who are willing to work on their own costs and are able to take care of injured sea turtles.
Attend an event at the Athens and Epidaurus Festival. It runs during the summer and offers a wide spectrum of events covering almost every taste. Try to attend a performance at the ancient theater of Epidaurus -a truly unforgetable experience.
Every Sat/Sun you can join a free bike tour of the old area of Athens. To take part in this, you should contact the NGO Anthropos or call 210 8838914 but you can just turn up if you aren't able to contact them in advance. Groups meet at 10:40AM outside Thissio metro station.
If the weather is good, head out of town on buses A2, B2 or E22 from metro station Sygrou, or the tram from Syntagma to the beaches to the south of Athens. Just get off wherever the sea takes your fancy. Be aware though that beach-side cafes can hit you hard with prices of food and drinks. If you are the only person getting on the bus, be aware that you need to flag the bus down to get it to stop or it will just fly on by.
EasyCruise, Syngrou Avenue 362, Kallithea , 176 74 Athinai, phone +30 211 2116211. The infamous cheap flight company now runs a variety of cruises from Greece [Athens] to Turkey and surrounding islands such as Mykonos, Paros and Syros. For the classic enthusiast, their tour company visits Acropolis, Epidavros, Nemea, Mycenae, Corinth, Olympia and Delphi.

Entertainment

Theater and Performing Arts

Athens is home to 148 theatrical stages, more than any other city in the world, including the famous ancient Herodes Atticus Theatre, home to the Athens Festival, which runs from May to October each year. In addition to a large number of multiplexes, Athens plays host to a variety of romantic, open air garden cinemas. The city also supports a vast number of music venues, including the Athens Concert Hall, known as the "Mégaron Musikis", which attracts world-famous artists all year round.

Buy

Although a huge city, Athens has relatively few shopping malls or large department stores; the small, family run shop still conquers all. Souvenirs are of course available everywhere that tourists go. Other shopping opportunities are antiques, museum reproductions, embroideries and other folk art goods, and Greek food and drink products. Here is an overview of the Athens shopping scene; detailed listings will be found on the relevant district pages:
Plaka is lined with souvenir shops, most of them selling cheap souvenir knick-nacks, though there are a few higher-quality shops here and there. Prices can be high for quality items.
Kolonaki is the upscale, hip, and artistic shopping area. Another is Kifissia.
For a more reasonable price tag, try Ermou Street, beside Syntagma Square. Turn right off Ermou at the MAC makeup shop and you'll find yourself on Aghiou Markou and other small streets which are home to incredibly cheap shoes, bags, jewellery, gifts, homewares, and so on.
The Mall at the Metro Station "Neratziotissa" (Line 1) is the biggest shopping mall in Athens with a large variety of shops, cafés and restaurants and, arguably, one of the most "hi tec" cinemas in the city.
The Golden Hall is a shopping mall at Kifissias avenue in Maroussi and includes shops with luxury brands, as well as luxury cafés, bars and restaurants.
The Athens Heart is a shopping mall close to the center of Athens.
Street vendors, with their wares laid out on blankets on the pavement, can be found in many places where tourists congregate, especially in Plaka and Monastiraki. Their goods are mostly forgeries, cheap knock-offs, and illegal CDs. These vendors are unlicensed, which is in violation of Greek law, and you may notice them vanishing as soon as a policeman is in sight, to reappear the instant the police have gone. They are best ignored. (This warning doesn't apply to vendors of fruit, nuts, etc. from street carts, who are usually legitimate.)