Spend your first day exploring the colorful streets of Old San Juan, a UNESCO World Heritage Site. Take a stroll down Paseo de la Princesa, a tree-lined promenade, to La Puerta de San Juan, a historic city gate. Stop for lunch at Café Berlin, a restaurant known for its Puerto Rican cuisine. Visit the Castillo San Felipe del Morro, a 16th-century fortification that offers stunning views of the Atlantic Ocean.
Spend your second day exploring El Yunque National Forest, the only tropical rainforest in the United States National Forest System. Take a hike to La Mina Falls, a 35-foot waterfall surrounded by lush greenery. Stop by the Yokahu Tower, an observation deck that offers panoramic views of the forest and the coast. End your day with a swim at Luquillo Beach, a popular spot for locals and tourists.
Spend your third day on Culebra Island, a Caribbean paradise known for its crystal-clear waters and white sandy beaches. Take a ferry from Fajardo to Culebra Island. Spend the day swimming, snorkeling, and sunbathing at Flamenco Beach, one of the most beautiful beaches in the world. End your day with a seafood dinner at Zacos Tacos, a beachfront restaurant.
Spend your fourth day exploring the Arecibo Observatory, the world's largest single-dish radio telescope. Take a guided tour of the facility and learn about its history and scientific discoveries. Afterward, visit the nearby Camuy Caves, a network of limestone caves with underground rivers and waterfalls. Take a tram tour of the caves and enjoy the breathtaking views.
Spend your fifth day soaking up the sun and surfing at Rincon Beach, one of the best surfing destinations in the Caribbean. Take a surfing lesson at Rincon Surf School and ride the waves like a pro. In the afternoon, go on a whale watching tour and spot humpback whales in their natural habitat. End your day with a beachfront dinner at La Copa Llena, a restaurant known for its seafood and cocktails.
Spend your last day exploring the Bioluminescent Bay in Vieques Island, one of the most unique natural wonders in the world. Take a ferry from Fajardo to Vieques Island. In the evening, take a guided kayak tour of the bay and see the water light up with blue-green bioluminescent organisms. End your day with a dinner at El Quenepo, a restaurant known for its farm-to-table cuisine.
If you're interested in history, visit the Fortín de San Gerónimo del Boquerón, a 17th-century fortification. For a taste of Puerto Rican rum, visit the Casa Bacardí distillery and take a tour. If you're traveling with kids, visit the Museo del Niño, a children's museum with interactive exhibits. Try to maximize your fun by visiting more beaches and enjoying water activities.