Guanahacabibes Peninsula is the western most point on the island of Cuba. It is in the Pinar del Río Province, in the municipality of Sandino and is sparsely populated. The waters surrounding the peninsula are important lobster and red snapper fishing grounds. It also boasts the category of Biosphere Reserve, listed by UNESCO in 1987. Its western extremity, Cape San Antonio (), is the western most point of Cuba.