Look at what I just wrote. Don't ask for information about places on the other side of Athens that costs $20.00 US to go and return. Love this city.
And the Parthenon and the National Archeology Museum are No.1 & 2.
Shopping at the many store fronts on side streets is where bargains can be found. Stay away from toursist traps. Exam[le: A taxi at Syntagma may ask 40.00 dollars for a ride that the meter driver only charges $5.00 for.