Fodor's Expert Review Centro Agronómico Tropical de Investigación y Enseñanza

A good place for bird-watchers and garden enthusiasts, the Tropical Agricultural Research and Higher Education Center—better known by its Spanish acronym, CATIE—is one of the leading tropical research centers in Latin America, with headquarters here and affiliates in nine other countries. You might catch sight of the yellow-winged northern jacana or the purple gallinule in the lagoon near the main building. The 10-square-km (4-square-mile) property includes landscaped grounds, seed-conservation chambers, greenhouses, orchards, experimental agricultural projects, a large swath of rain forest, labs and offices, and lodging for students and teachers. The most popular attraction is the Botanical Garden Tour, a two-hour guided walk to taste, smell, and touch tropical fruits, along with cacao, coffee, and other medicinal and stimulant plants. A favorite stop is the "miracle fruit" tree, whose berries magically make anything sour taste sweet. Reservations are required for guided tours.