The “public transport” in Athens is compared to other major European cities an approximate disaster and the best example of how the state has neglected its citizens in recent decades and public funds are drained in corruption channels. There are just three subway lines for 5 million people, two of which were built for the 2004 Olympics. There is also one (!) Tram and about 300 bus lines. For comparison: Berlin offers 200 bus lines, 10 subway lines, 15 S-Bahn lines and 22 tram lines. In addition, the buses in Athens have no fixed departure times, they come now and then and sometimes not at all, maybe they are stuck in a traffic jam, are broken or there is a strike (which is felt at least once a week). At peak times (in the morning between 8-10 clock and 17-21 clock in the evening), the public transport is totally crowded, sometimes you can not get in buses and must wait for the next. The only downside: The tickets are € 1.40 per ride cheaper than elsewhere, especially the weekly menu (9 euros), the monthly pass (30 euros) and the annual pass (330 euros, concessions 165 euros) are very cheap. There is also a commendable bus traffic app (OASA App for Android und iOS) that displays bus departure times in real time; For example, you already see from home when the next bus arrives at the next stop and so knows when to leave the house. So you can see in real time which buses go where. A good website that displays all connections from A to B and also compares travel times and costs is zee.gr. All information about lines and tickets can be found on the website oasa.gr.