This is a small fort — the last one built by the Spaniards in America — sitting on a hill with a beautiful view towards the town of Isabel Segunda. In the place, you will find an art and history museum with Caribbean artifacts, information about the sugarcane industry, historical records, and more. There is also an important exhibition about the people of Vieques' fight against the United States Navy, which had control over the island for decades. Admission to the museum is free of charge, but a kind donation is always welcome. Fortín Conde de Mirasol opens from Wednesday to Sunday from 10:00 a.m. at 4:00 p.m.