At the end of the Arrivals hall, we checked our carry-on bag for 3€ with Pacific Baggage Services and then followed the signs to the Metro where we bought 2 tickets to Central Athens (Syntagma Square) for 14€. The train departs every 30 minutes and it takes about 40 minutes to the centre.
Originally, we talked about immediately walking to the Acropolis in hopes of taking in one of Athens most famous sites but by the time we got everything sorted and into town, we knew we'd be too rushed for time. Instead, we perused the streets and stopped in awe every time the Parthenon & Acropolis came into view, perched high above the city. We stumbled upon other Ancient ruins scattered throughout the city centre and after a late lunch, we returned to the airport to catch our final flight.
A few hours definitely wasn't enough to take in one of the world's oldest cities and the birthplace of democracy.