Platamon Castle, Medieval castle and archaeological site near Mount Olympus, Greece

Platamon Castle is a fortress and archaeological site perched on a rocky hill in the Dion-Olympos Municipality, where the Aegean coast meets the pass between Thessaly and Macedonia. The site has thick stone walls, towers placed at irregular intervals, and a central keep that rises above the rest of the structure.

The hill was occupied since the Bronze Age and later held the ancient city of Herakleion, described by Skylax around 360 BC as the first Macedonian city behind the Peneios. The Crusader castle was built between 1204 and 1222 by the Lombard knight Rolando Pice on the orders of Boniface of Montferrat. In 1425 Venetians briefly took it, burning over 100 Ottoman defenders inside, and held it until 1427.

The small chapel of Agia Paraskevi still stands inside the walls, showing how religious life was part of everyday existence here. Walking through the grounds, visitors can see how building styles from different periods sit side by side, making the long occupation of the site visible.

Getting to the top means walking up uneven stone paths with some steep sections, so sturdy footwear is a good idea. The site is mostly open ground with little shade, which makes an early visit worth considering during warmer months.

The castle grounds hold several cisterns that stored water during long sieges. The only intact building inside the walls is the small church of Agia Paraskevi, which seats about 30 people and was converted into a mosque during the Ottoman period. The donjon, the last refuge in battle, is not open to visitors.