Zeytinli Island

Zeytinli Ada is a small island and archaeological site located near the coast of the Erdek district in Balıkesir province, south of the Sea of Marmara. The island is known for archaeological traces from various historical periods and particularly for monastery ruins dating to the Byzantine era. Today, Zeytinli Ada is recognized both as an archaeological excavation site and as a cultural heritage element, and it is included among protected areas.

^{Zeytinli Ada (}Erdek Municipality⁾

Zeytinli Ada is situated a short distance from the town center of Erdek and very close to the coastline. With a small surface area, the island forms part of the coastal landscape of the Sea of Marmara, characterized by its natural structure and marine environment. There is no permanent settlement on the island today. The name Zeytinli Ada derives from olive trees that are believed to have existed there in the past.

Based on archaeological evidence, Zeytinli Ada has a multi-layered historical past extending from antiquity to the Middle Ages. Architectural remains and artifacts found on the island indicate its use during the Hellenistic, Roman and especially Byzantine periods. During these eras, the island was regarded as a settlement equipped with religious and functional structures.

Archaeological excavations on Zeytinli Ada have been conducted to scientifically document and preserve the site. These investigations have revealed that the island was intensively used during the Byzantine period. Among the uncovered remains, religious architectural elements such as monastery buildings, a church and a baptistery stand out. The excavations have provided evidence confirming the island’s role as a religious center.

The most prominent archaeological feature of Zeytinli Ada is the monastery complex dating to the Byzantine period. This group of structures demonstrates the presence of organized religious life on the island. Different sections of the monastery were arranged to serve functions related to worship, accommodation and daily living.

^{Zeytinli Ada historical research (}Erdek Municipality⁾

The remains of the church and baptistery within the monastery complex highlight the island’s significance in Christian history. The baptistery is particularly important as it demonstrates the practice of the baptismal rite on the island, a central element in Christian belief. These structures are considered among the local examples of Byzantine religious architecture.

^{Zeytinli Ada excavation site (}Erdek Municipality⁾

Today, Zeytinli Ada is designated as the “Zeytinli Ada Excavation Site” and serves as a subject of scientific research. The site holds the status of an archaeological protected area, and excavation and documentation activities are carried out under the supervision of relevant institutions. The excavation site is significant not only for its architectural remains but also for various small artifacts that shed light on the island’s historical use.

Zeytinli Ada has been placed under protection as part of the cultural heritage. To prevent damage to the archaeological remains, uncontrolled construction and interference on the island are prohibited. Protection efforts aim to preserve the scientific integrity and sustainability of the excavation site.

Zeytinli Ada is an important cultural heritage element for Erdek and its surroundings. Due to its archaeological and historical features, it holds potential for cultural tourism. When considered together with its natural environment, the island stands out as one of the unique areas reflecting the historical identity of the region.