The Castle of Methoni in Messenia, Peloponnese, Greece: The port was on the route between Venice and Eastern markets, and the Holy Land. Beginning in the Venetians took the area from pirates and fortified it. 300 years later, it fell to the Ottomans.
Greece is definitely on my bucket list Half Moon bay, Messinia, Greece
Diros Caves: "The Diros cave system is one of the finest in the world, with its magical combination of stone and water, and even though it is now somewhat of a fairground ride the wonder still remains." The Peloponnese: the Bradt Guide
'Agia Theodora, Vasta, Arcadia, has 17 enormous holly and maple trees growing on its roof. Most of them are taller than 30 meters.
This photo from Lakonia, Peloponnesus is titled 'Mani Towers'.