6 Days in Greece
Though really tough it is yet do-able... so here's the Itinerary
Spend 2 days in Athens
Day 1- wake up at 7 am ( so you can beat the summer heat ... cause it's already 17C
Temple of Zeus and Olympic Park
Acropolis and temple of Athena
Plaka Town center is right besides the Acropolis: on Sundays there's the Flea Market
Syntagma Square in order to see the change of Gards
Head up Mt LycabettusWonder around Monastiraki neighborhood.
Central Market: do you shopping.
The National Archaeological Museum
If you have decided to head for Mt Meteora, you'll need to purchase your ticket at the Bus terminal B ( 40 euro for an open return ticket)
1 Day Mt Meteora
Athens - Trikala - Mt Meteora.
All the monasteries open different days so double check whether the one you want is open.
2 days on Aegina ( Greek Island)
You can purchase a return ticket for 17 euros and the island is only 1h30 from Athens' port . In addition to this , the island is the number one producer of pistachios.
Day 6 ferry back to Athens... and catch the Express bus X96 to the airport right beside Athens' port