Pyrgos Castle is a historic fortress located on the island of Santorini, Greece. Built in the 15th century, it served as a defensive structure against pirate attacks and invasions. The castle is situated on a hill, offering stunning views of the surrounding landscape and the Aegean Sea. The castle features remnants of its original walls, towers, and several churches, showcasing the architectural style of the time. Today, Pyrgos Castle is a popular tourist destination, allowing visitors to explore its ruins and enjoy panoramic views of the island's unique beauty.