Fortaleza de San Carlos de la Cabaña Tavel Guide
Fortaleza de San Carlos de la Cabaña (Fort of Saint Charles), colloquially known as La Cabaña, was built between 1763 and 1774 by King Carlos III of Spain, located on the elevated eastern side of the harbor entrance in Havana, Cuba. It is an 18th-century fortress complex, the third-largest in the Americas.
Over the next two hundred years, La Cabaña was used as a military prison during the Batista regime. In January 1959, Che Guevara used the fortress as a headquarters and military prison for several months.
The complex is now part of a historical park, along with the El Morro fortress, and houses several museums open to the public. Every night a cannon is fired at 9pm, the so-called "El Cañonazo de las 9", a custom kept from colonial times signaling the closure of the gates in the city wall.