Acropolis of Serres, Archaeological site and citadel in Serres, Greece
The Acropolis of Serres is an ancient fortress perched on Koulas hill with preserved defensive walls, multiple towers, and ruins spanning various historical periods. The structures spread across the hilltop and reveal layers of fortification work built over centuries.
The fortress began in the 9th century with its initial defenses and was expanded over time by successive rulers and powers. The prominent Tower of Orestes was built in 1370 under Serbian ruler Stephen Dusan as a major defensive strongpoint.
The Byzantine church of Saint Nicolas sits at the northeast end and shows a rare three-part interior layout with an underground chamber below. This building reveals how religious life was woven into the fortress.
The site is open year-round with no entrance fee, so you can visit freely at your own pace. Wear sturdy shoes since paths across the hilltop and around the ruins are steep and uneven in places.
Two towers on the southeast and northwest sides have kept their original shape and show how the fortress looked in medieval times. These surviving structures give visitors a rare glimpse of authentic medieval architecture from this place.
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