If you plan to use the public transportation whilst in Athens, be sure to get yourself the Athens transport card. As the name tells, the card can be used for limitless travel within the city. There are several types of Athens transport cards available, and thus everyone can choose the one that best meets his/her needs. The transport card is valid in journeys on bus, metro, trolley etc. during weekdays and weekends, including trips to the beaches close to the city centre.