Azua de Compostela, also known simply as Azua, is a city, municipality and capital of Azua Province in the southern region of Dominican Re…Azua de Compostela, also known simply as Azua, is a city, municipality and capital of Azua Province in the southern region of Dominican Republic. Founded in 1504, Azua is one of the oldest European settlements in the Americas. The town is located 100 kilometres west of the national capital, Santo Domingo.