Saint Peter's Basilica. The view is taken from the 'cupola' (dome) after climbing up 330 steps! not for the faint-hearted. A 360 degree panaromic view of the city of Roma.
One cannot miss this famous historical site when visiting Athens. Besides this, Greece is also famous for its beautiful and breathtaking islands...some of which I set foot on are Poros, Aegina and Hydra, all in a day cruise.