4 Best Sights in Guanica, Ponce and the Porta Caribe

The gentle waters at this beach on Route 333 wash onto a wide swath of sand fringed with palm trees. This is one of the few beaches in Puerto Rico that meets the high environmental standards of the Blue Flag program. There is a designated area roped off for swimmers, and lifeguards remain on duty most afternoons. You'll also find picnic tables, restrooms, showers, and changing facilities. During high season there are beach-chair rentals, food vendors, and paid parking. Amenities: food and drink; lifeguards; parking (fee); toilets. Best for: snorkeling; swimming; walking.

This 9,900-acre United Nations Biosphere Reserve is a great place for hiking. An outstanding example of a subtropical dry forest, it has some 700 species of plants, from the prickly-pear cactus to the gumbo limbo tree, and offers superb bird-watching; its more than 100 species include the pearly-eyed thrasher, lizard cuckoo, and nightjar.

The popular Ballena Trail, which begins at the ranger station on Route 334, is an easy 2-km (1¼-mile) walk that follows a partially paved road past a mahogany plantation to a dry plain covered with stunted cactus. A sign reading "Guayacán centenario" leads you to an extraordinary guayacán tree with a 6-foot-wide trunk. The moderately difficult, 5½-km (3½-mile) Fuerte Trail leads to an old fort built by the Spanish Armada. It was destroyed in the Spanish-American War in 1898, but you can see ruins of the old observatory tower.

In addition to using the main entrance on Route 334, you can enter on Route 333, which skirts the forest's southwestern quadrant. You may also wish to explore the less-trafficked area west of the town of Guánica, off Route 325.

Rugged cliffs make a dramatic backdrop for this little cove off Route 333, but the water can be rough. The road down to the beach is extremely steep and rocky and shouldn't be attempted without a four-wheel-drive vehicle. Locals tend to visit this spot for family cookouts and relaxation by the water's edge. Amenities: parking (no fee). Best for: solitude; sunset.

You can rent canoes, kayaks, and pedal boats at this beach at the end of Route 325 in the Ensenada district. This beach is popular with local teenagers and can get congested, but the mile-long shoreline is kept clean. The light sand and clear water are great for smaller children and people who just want to relax by the ocean. Amenities: food and drink; parking (no fee); water sports. Best for: sunset; swimming; walking.