Simon's Town
The British built three Martello towers in South Africa, one at Simon's Town Naval base near Cape Town, one at Cape Town, and the third at Fort Beaufort. The tower at Simon's Town and Cape Town were both built in 1795. The tower at Cape Town was demolished over 100 years ago, but the tower at Simon's Town now is sometimes claimed as the oldest Martello in the world. It is arguable as to whether one should properly call it a Martello Tower.