The complex islets of Drenia (or Gaidouronisia) is east of Ammouliani. Drenia is the largest islet and Feti, Penna, Artemi etc are the smaller ones. Only residents of Ammouliani used to go to Drenia to celebrate Clean Monday. At present day it is an organized tourist destination with umbrellas, sun loungers, tavern-refreshment stand etc. You can go there by boat from Ouranoupolis or rent a private boat to explore every islet and its beaches one by one.