Athens, the cradle of Democracy, is one of those cities of the world that will not disappoint. The history, the art, the architecture and the food are all as good as you imagined. And the people are genuinely kind and love their country.
There are old neighborhoods, historic neighborhoods and vibrant new neighborhoods full of artists and young people.
The area that most people visit are around the Acropolis, known as the Plaka, as it has the concentration of all the historical sites one will want to see, which include the Parthenon, Temple of Zeus, Temple of Athena, the new Acropolis museum, the park-like area of the Ancient Agora with streets that Socrates walked on, as well as the nearby National Garden of Athens next to the Greek Parliament.
For me, one of the most exciting areas outside of the historical center is Gazi, which was where the old Gas Factory used to be. It now is a new hip area full of young adults and college kids all hanging out at clubs and restaurants and bars with their wide sidewalks and newly converted buildings into shops, condos and galleries. It has also become the gay mecca for Athenians. A must visit for anyone going to Athens.
And try the food. The cucumber and tomato salad with feta is the freshest and best tasting I ever had. And I visited before becoming a vegetarian and really enjoyed the lamb. And finally, as touristy as it sounds, have some ouzo. It's good.
I would go back to Athens every chance I got. Go, you will love it!