Saint Helena, Ascension and Tristan da Cunha is a British Overseas Territory located in the South Atlantic Ocean. It consists of three separate islands: Saint Helena, Ascension Island, and Tristan da Cunha. Each island has its own unique history and culture.

Saint Helena is best known as the place of Napoleon Bonaparte's exile and death. Ascension Island serves as a crucial air and space travel hub for the British and American military. Tristan da Cunha is one of the most remote inhabited islands in the world, known for its rugged beauty and self-sufficient community.

The territory has a small population, with the majority living on Saint Helena. The economy is primarily based on fishing, agriculture, and tourism.

Saint Helena, Ascension, and Tristan da Cunha are known for their biodiversity, with many unique plant and animal species found on the islands.