El Portal Tropical Forest Center, Rte. 191, Río Grande (tel. 787/888-1880), an $18-million exhibition and information center, has 10,000 square feet (929 sq. m) of exhibition space. Three pavilions offer exhibits and bilingual displays. The actor Jimmy Smits narrates a documentary called "Understanding the Forest." The center is open daily from 9am to 5pm; it charges an admission of $3 for adults and $1.50 for children under 12.

El Yunque is the most popular spot in Puerto Rico for hiking. Hikers will find useful information at any of the park's visitor information centers or at the El Yunque Catalina Field Office, near the village of Palmer, beside the main highway at the forest's northern edge (tel. 787/888-1880). The staff can provide material about hiking routes, and, with 10 days' notice, help you plan overnight tours in the forest. If you reserve in advance, the staff will also arrange for you to take part in 2-hour group tours. These tours are conducted Saturday to Monday every hour on the hour from 10:30am to 3:30pm; they cost $5 for adults and $3 for children 12 and under.

Note: This information was accurate when it was published, but can change without notice. Please be sure to confirm all rates and details directly with the companies in question before planning your trip.