Martello Tower - Credit: Wikimedia Commons
The Martello Tower (Sinhala: මාටෙලෝ කුළුණ Matelo Kuluna) in Hambantota, is a small circular shaped fort, inspired by the Martello tower (a 15th-century fort at Mortella (Myrtle) Point in Corsica that survived an attack by the British Royal Navy in 1794). Read more on Wikipedia
Source: en.wikipedia.org