The Alderburg Martell Tower is a historic defense tower located on the Alderburg coastline in Suffolk, England, built during the Napoleonic Wars from 1808 to 1812. This tower is famous for its unique design, with four gun emplacements on the roof, which was extremely rare in the Martel Tower at that time. Its existence is to strengthen coastal defense, covering both the river behind and the sea ahead to deal with potential invasion threats. Not only a symbol of military defense, but also a part of British history, witnessing the military strategy and architectural technology of that era.