Soroa: 87km (54 miles) W of Havana; San Diego de los Baños: 120km (75 miles) W of Havana

The mountainous region between Havana and Pinar del Río is another prime destination in the country's budding ecotourism industry. With both the Sierra del Rosario Biosphere Reserve and La Güira National Park, as well as ecotourism projects in Soroa and at Las Terrazas, the area offers a wealth of opportunities to explore the flora and fauna of Cuba's inland mountain forests.

Just west of the Sierra de los Rosario, in the foothills of the Sierra de los Organos, you'll find La Güira National Park and San Diego de los Baños. La Güira is a small park that is nonetheless a favorite stop for bird-watching tours and general sightseers. San Diego de los Baños is a tiny back-of-beyond town built on the edge of a lovely river and some natural mineral springs. The springs, which have been closed for some time, had been famed for their medicinal properties for centuries. Today only basic spa treatments and physical therapy are available.