A 13th-century Frankish fortress near Pylos in Peloponnese.
Start your hike from Voidokilia beach and head to the cave of Nestoros.
When you reach the cave, take the path on your right and go up the abandoned castle.
Be extremely careful when you are in the castle due to deteriorating condition. Head back form the main gate and around the hill.
INSANE view and one of the best hikes you would have done!