The Trabzon Museum, also known as the Kostaki Mansion (Kostaki Konağı), is a magnificent historic building and one of the key attractions in the city of Trabzon, located in northern Turkey. This mansion is rightfully considered one of the city's most beautiful buildings, attracting visitors with its exquisite architecture and rich history.

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The mansion was originally built in the early 1900s as a private residence for Kostaki Teophylaktos, an influential Greek banker. Located on Zeytinlik Street, it is a striking example of early 20th-century architectural style, reflecting the luxury and aesthetic preferences of that era.
Currently, this well-preserved building functions as the Trabzon History Museum. Its halls display a variety of exhibits that tell the story of the region's centuries-old history and unique culture. Visitors can explore artifacts, documents, and artworks reflecting different periods of development in Trabzon and its surroundings.
The architecture of the Kostaki Mansion is notable for its unique style, which harmoniously combines European—specifically Italian—influences. This makes it not just a museum, but a cultural heritage monument of the Ottoman era in its own right. Visiting the Trabzon Museum is an opportunity not only to immerse yourself in the region's past but also to enjoy the splendor of the historic mansion itself.