If you are in Athens just for a day or two, it may be best to take an organized city sightseeing tour. That way you can choose the attractions and locations you absolutely want to see and experience, in best case with full commentary. If you prefer to have your own privacy and pace, you can always make your own custom Athens city sightseeing tour. Organized sightseeing tours, for example by Redbuses.com, are widely available and many providers offer a pass that is valid for 24 hours plus one day free from the first use. That way you get two full days of Athens city sightseeing tours! Alternatively, you can use the public transportation bus line 400, which covers over 20 loved sights in the Athens area.