São Borja is a city located in the state of Rio Grande do Sul, in the southern region of Brazil. It is situated on the border with Argentina, and is known for its rich history and cultural heritage. The city is home to several historical landmarks, including the São Borja Cathedral and the Júlio de Castilhos Museum, which showcases the region's history and traditions. São Borja is also known for its beautiful natural landscapes, with the Uruguay River running through the city and providing opportunities for outdoor activities such as fishing and boating.