Introduction to El Yunqueby FROMMER'SNovember 20, 2006 The El Yunque rainforest, a 45-minute drive east of San Juan, is a major attraction in Puerto Rico. Part of the Caribbean National Forest, this is the only tropical forest in the U.S. National Forest Service system. The 28,000-acre (11,200 hectare) preserve was given its status by President Theodore Roosevelt. Today the virgin forest remains much as it was in 1493, when Columbus first sighted Puerto Rico. (read article)