Puerto Rico Guide

Tropical hike to cascading waterfalls

With 13 well maintained trails that cover 23 miles of varied terrain, Yunque National Forest is a hikers dream. You'll also find cascading waterfalls, rivers and streams that collect into pools. Great for picnicking and a cool dip. The park is managed by the U.S. Forest service. They educate visitors about the tropical forest using interpretive displays, discussion and brief movies. Open daily from 9:00 a.m. to 5:00 p.m.

The world's largest radio telescope

Arecibo Observatory houses the world's largest single-dish radio telescope. The dish spans 20-acres in diameter! Visitors are astounded by the enormous size of the dish made up of almost 40,000 perforated aluminum panels. There is a 900-ton platform built over the reflective surface which is set in a sinkhole 450 feet below. Scientist from around the world use this telescope to study the properties of planets, comets and asteroids, faint pulses emitted hundreds of times per second from pulsars, galaxies and quasars at the farthest reaches of the Universe. There is an exhibit and audio-visual show designed to educate the public on the basics of astronomy and provide information about this gigantic radio telescope.

Explore our cavernous underworld

Hop on the tram and explore Río Camuy Park's great subterranean caverns carved out by the Camuy River over one million years ago. Rio Camuy Cave Park is the third-largest underground cave system in the world. Inside the incredible 268-acre park a guide will provide information on tropical surroundings and the caverns. There are also picnic areas, walking trails, food facilities, an exhibition hall and a souvenir shop, making it the perfect place to spend the day. Reservations are recommended. The park is open Wednesdays through Sundays (and holidays) 8am to 4pm. Advanced cave explorers can arrange for special tours and rappelling trips through undeveloped sections of the caves.