40 euros, good for 90 minutes), don't forget to validate your ticket) 
From the Thissio station, walked to the Ancient Agora and purchased a 12 euro ticket (which also includes access to the Acropolis, Dionysus Theatre, Acropolis museum, etc), 
After the Agora, I made my way to the Aeropagus (Mars hill) where the Apostle Paul preached, and then on to the Acropolis, the Dionysus Theatre, Hadrian's Arch, the Temple of Zeus, 
and then walked to the Olympic stadium, and then back through the park to the Syntagma metro station, and back to the cruise port via the blue line metro to Monastiraki and the green line to Piraeus, 
and then took the 843 or 859 bus to the cruise terminal A, and the free shuttle to the cruise ship (at cruise terminal B).(they took the Bus tour of Athens + Plaka shopping at $59pp, the cheaper $39pp Bus tour of Athens was sold out), the cruise ship docked at terminal B (south east part of the port, and the furthest from the metro station) 
Before doing Athens on my own, I had downloaded the free MP3 audio tours from Rick Steves (http://www.

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