Theories include a mausoleum (supported by fresco fragments and tomb-like features), a lighthouse, or defensive structure. 

It stands approximately 14 m (46 ft) tall. 

Historically free to view from outside; recent info is mixed—best to check current signage. Some sources mention a small fee (~36 ₺) for inside access. 

Exterior accessible 24/7; interior hours align with summer (approx. 08:00–19:00) / winter (08:30–17:30) schedules.