Bourtzi Castle (or Bourtzi Castle) is a famous fortress located off the coast of Nafplio, a town in the Peloponnese region of Greece. The fortress is located on a rocky island called Bourtzi, which means "tower" in Turkish.Bourtzi Castle was built in the 15th century by the Venetians during the period of Venetian rule over the Peloponnese. Initially, it was used as part of the maritime defense system of Nafplio. It has a polygonal shape with ramparts, towers, and a bridge connecting it to the mainland.Over the centuries, the castle has served various roles and undergone several modifications. It has been used as a prison, administrative headquarters and even as a residence for the Ottoman governor. Today, Bourtzi Castle has become a popular tourist attraction and is one of the distinctive symbols of Nafplio.Visitors can reach the castle via a short boat ride from the city of Nafplio. Once there, they can explore the structure, admire the panoramic views of the city and the surrounding Aegean Sea, and learn about the history and architecture of the fortress.Bourtzi Castle is considered an important historical site and a tourist icon of the Peloponnese region of Greece.