Extensive original cinematography that includes aerials of the Puerto Rico coastline, re-enactments of the 1625 Dutch attack on Puerto Rico, the failed English invasion of 1797, and the imprisonment of Maria de las Mercedes Barbudo, a political activist for Puerto Rico’s independence from Spain, combined with 3D animation that depicts the centuries-long transformation of the fortifications are some of the central elements in “Legacy of an Island: The Fortifications of Old San Juan.”Beginning with the early attempts to fortify a small colony in the 1530s and incorporating original documents from various archives in Spain and Puerto Rico, the films invite viewers to explore San Juan and its surrounding fortifications, to witness the rise and fall of the Spanish empire and the subsequent rise of the United States, and to become privy to the dreams of an empire and the battles for world domination that forged the largest system of fortifications in the New World.