Piauí is a state located in the northeastern region of Brazil. It is bordered by the Atlantic Ocean to the east and shares borders with the states of Maranhão, Tocantins, Goiás, and Bahia. The capital city is Teresina, which is known for its warm climate and vibrant culture. Piauí is characterized by its diverse landscapes, including plateaus, valleys, and rivers. The state is rich in natural resources and is home to several national parks, such as Serra da Capivara National Park, which is famous for its prehistoric rock paintings. Piauí's economy is primarily based on agriculture, livestock, and tourism, attracting visitors to its unique cultural heritage and natural beauty.