The only specialized tour offered of Castillo San Felipe del Morro - the most impressive fort ever built by the Spanish Crown in the New World. Be a part of a small-group tour offered by a local historical architect and preservation expert who has actually worked restoring the site. Explore each of the six levels of this unique UNESCO-designated World Heritage Site begun in 1540 and spanning in height to up to 145-feet above sea level. A Spanish Colonial castle, a U.S. Army Fort and Puerto Rico's #1 tourist attraction -you can't leave this Island without visiting El Morro!