Action of 13 June 1898 decided to withdraw. At the outbreak of the Spanish–American War Cienfuegos was a strategically important port due to its facilities and good communications with Havana. Some prewar plans recommended its prompt capture, but instead it was blockaded, along with some other important ports of the southern coast of Cuba such as Santiago de Cuba and Manzanillo. The most powerful Spanish naval units of the island, meanwhile, had been gathered in Santiago, and submarine defenses consisting mainly of torpedoes had been installed in the major ports of Havana, Cienfuegos, Santiago and San Juan de Puerto Rico. The naval units based in
Santiago de Cuba huge windows and crowded balconies. Preserved historical treasures include the first home in the Americas, the first cathedral in Cuba, Cobre mine, the first copper mine opened in the Americas, and the first Cuban museum. The local citadel of San Pedro de la Roca is inscribed on the UNESCO World Heritage List as "the most complete, best-preserved example of Spanish-American military architecture, based on Italian and Renaissance design principles". The Baconao Park was inscribed on the UNESCO World Heritage Biosphere Reserve List in 1987. Santiago de Cuba is located in the southeast of the island at coordinates 20° 01' 17.42"