What and the southernmost province of the country that occupies approximately one sixth of the Iberian Peninsula?

The southernmost province of Spain, which occupies approximately one-sixth of the Iberian Peninsula, is Cádiz. It is located in the autonomous community of Andalusia and is known for its rich history, beautiful Coastlines, and vibrant culture. Cádiz is also famous for its historic port city and the Carnival of Cádiz, one of the most popular festivals in Spain.