Leander's Tower, also known as Kız Kulesi, is a historic lighthouse located on a small islet at the entrance of the Bosphorus Strait in Istanbul, Turkey. It has served various purposes throughout history, including a watchtower and a lighthouse, and is a popular symbol of the city. The tower stands approximately 23 meters tall and features a distinctive octagonal shape. It is surrounded by water and offers stunning views of the Istanbul skyline and the Bosphorus. Today, Leander's Tower is a popular tourist attraction, with a restaurant and a café for visitors to enjoy.