Historic fortifications in Balıkesir

Balıkesir's strategic position between the Marmara and Aegean seas is evidenced by its diverse military and civil engineering. This collection features the remains of Cyzicus, once one of the largest cities of the ancient world, including its massive amphitheater and hexagonal defensive tower. The Roman Aesopus Bridge showcases late antique infrastructure, while medieval strongholds like Muhla Kalesi and Dereköy Kalesi protected the region's interior and coastal approaches. These sites offer a chronological look at defensive architecture from the Hellenistic period through the Byzantine era.

Cyzicus

Cyzicus was an ancient Greek town in Mysia in Anatolia in the current Balıkesir Province of Turkey.

Aesopus Bridge

The Aesepus Bridge was a late antique Roman bridge over the Aesepus River in the ancient region of Mysia in modern-day Turkey.

Muhla Kalesi

Byzantine-era fortress situated on the Kapıdağ Peninsula, originally built to provide coastal surveillance and defense for the surrounding region.

Kyzikos Hexagon Tower

A distinctive hexagonal defensive structure that formed part of the outer fortification walls of the ancient city of Cyzicus.

Pordoselene Kulesi

Ruins of a Byzantine watchtower located on Maden Island near Ayvalık, once serving as a maritime lookout point for the ancient settlement of Pordoselene.

Dereköy Kalesi

Byzantine-era fortification located near Manyas, featuring remnants of defensive walls situated on a strategic hilltop overlooking the surrounding plains.