The Havana Bay Harbor has a past as violent as its revolution. The Spanish founded Havana in about 1519 as a part of its colonial empire. Spain’s interest in Havana rested, in large part, because the Bay of Havana offered a secure port for the Spanish Galleons crossing from the New World to Spain.
Because of the wealth that passed through the city, old Havana was vulnerable to French, English and Dutch Corsairs.  The massive fortifications of Morro Castle/Castillo de los Tres Reyes del Morro were constructed by the Spanish beginning in 1589 to protect against attacks by these pirates. Morro Castle sits across the harbor from another similar fortification, the Castillo de San Salvador. With the protection of these two fortifications, and others along the Coast, Old Havana was considered to be impregnable to attack.
Considered the major fortification of the Havana’s defense system, Morro Castle stood for 150 years until it fell during the Seven Years after a two month siege by the onslaught of English ships.
The fortifications were rebuilt and continued to protect and defend the harbor. They were used as a military base and prison.
In 1898 the USS Maine exploded and sank in Havana Harbor, in sight of these fortifications, its sinking was considered a significant cause of the Spanish-American War.
In 1959 Che captured another of the series of fortifications in the harbor, La Cabana and used it as a headquarters during one of the most brutal periods of the revolution.
For the last 63 years the forts have served no military purpose. They are, instead, powerful symbols of Cuba’s colonial past. The fortifications which serve as picturesque reminders of past battles, are now besieged by tourists, not enemy ships.
In 1972 Old Havana and its Fortifications was designated a UNESCO World Heritage Site because of its importance to cultural and/or natural heritage. A total of nine sites in Cuba have been recognized for inclusion on the list of World Heritage Sites. All of these sites were founded by early Spanish colonists. All of these designations are reasons for pride among the Cuban people and memories among the travelers fortunate enough to visit them.
 Corsairs were privateers/pirates and their ships. They plundered enemy ships and communities in the Caribbean and the Mediterranean Seas. Unlike more traditional pirates, corsairs were authorized to plunder the wealth of nations with which their governments were at war.