Rodos it's beautiful. Also Santorine. If you like party, Mykonos (Paradise beach) is the place. For the history Athens!

It depends on your time... For sure Athens deserves a visit of a couple of days...then I loved Hydra if you want to see an island closed to Athens, otherwise Milos. I loved also Monenvasia and Pilos in Peloponisos, and Delphi and Pilio in the north part of Greece...have fun..

Rhodes town is beautiful

quite a few options; if you want to take the mountains to see the colorfull scenery at this time of year you may take Taygetos or Parnonas on the Peloponess, i.e. 3 hours drive from Athens, or Karpenisi or Tzoumerka, 4 hours drive from Athens. if you want to see an island close to Athens, you may try Andros or one of the Saronic islands (Hydra, Spetses, Poros, Aegina). If you want to combine a plain, but elegant landscape and combine it with some culture (Mycenae, Epidaurus, Tiryntha) go to Nafplion; this is also a wine-region.

I loved Crete. Fun city but not enormous, and the feel was very together and fun.

Santorini! Beautiful amazing island. Athens for the history

The Acropolis og Athens!

Go to Athens - The Acropolis is really fantastic/magic! And try to do a cruise to visit Santorini and Mykonos - beleive me, these islands are spectacular! ;)

The Acropol,it's worth seeing it!!!!

Apart from Athens - Santorini, Mykonos and Creta