The island of Ios belongs to the heart of the Cyclades archipelago. Ios is famous beyond its deep blue beaches and intense nightlife for its architecture. The island is dominated by a mix of Cycladic traditional and modern styles, while some buildings date back to the Byzantine era. The Cycladic traditional architecture includes the whitewashed houses with flat roofs and the magnificent blue dome found in Niot churches. Panagia Gremiotissa, located in the center of the island, is one of the most emblematic churches for its special architecture. What makes it stand out is the unique blue dome, which is surrounded by a whitewashed bell tower, being a cultural ornament and a stop for tourists. An interesting example of architecture from the Venetian influence of the island of Ios is the old Venetian castle in Chora, which was built in the 15th century. In addition, among the modern architectural examples is the new terminal of the airport, which exudes a modern and minimalist character. It is important to mention that Ios is home to some of the most beautiful beaches in the world, which have breathtaking views of the Aegean Sea and the surrounding islands. The architecture of the beaches of Ios fits perfectly with the Cycladic style, being an ideal place for moments of relaxation and enjoyment.