Puerto Rico pairs one of the best-preserved colonial old towns in the Caribbean with rainforest, bioluminescent bays and easy island-hopping from its east coast. This guide brings together visitor guides to Old San Juan’s forts, museums and cathedral, alongside the natural attractions that draw visitors out of the capital, including El Yunque, the only tropical rainforest in the US National Forest System, and boat trips out to Icacos Island from Fajardo. Each linked guide covers ticket prices, opening hours and practical visitor tips.
Old San Juan: forts, museums and a cathedral
Puerto Rico’s walled old town holds a dense cluster of Spanish colonial landmarks, all within easy walking distance of each other.
- El Morro, San Juan: ticket prices, hours and visitor guide — a 16th-century Spanish fortress guarding the entrance to San Juan Bay.
- Castillo San Cristóbal, San Juan: a practical guide for first-time visitors — the largest fortification built by the Spanish in the Americas.
- Museo de Las Américas, San Juan: visitor guide with ticket prices and opening hours — art and artefacts covering the cultures of the Americas, housed in a former military barracks.
- Cathedral of San Juan Bautista: guide with opening hours, entry and what to see — the second-oldest cathedral in the Americas, and the burial place of Juan Ponce de León.
- Taste Ron del Barrilito rums at Hacienda Santa Ana.
Beaches, rainforest and outdoor adventure
Beyond the old town, Puerto Rico offers rainforest hikes, bioluminescent waters and easy boat trips to nearby islands.
- Bioluminescent night kayaking in Puerto Rico — paddling through waters that glow with bioluminescent microorganisms after dark.
- Swimming with green sea turtles in Escambrón Bay, San Juan — why green sea turtles have returned to this sheltered city bay for centuries.
- El Yunque, Puerto Rico: the only tropical rainforest in the US National Forest System, with a natural rock slide — hiking trails, waterfalls and a natural rock slide in the island’s mountainous interior.
- Icacos Island boat tour from Fajardo: all-inclusive snorkelling, beach day and lunch — a day trip to an uninhabited island known for its clear snorkelling waters.
- Charco Azul cave and waterfall tour, Puerto Rico: swimming, limestone caves, Taíno petroglyphs and cliff jumping — a tour combining limestone caves, ancient Taíno rock carvings and a waterfall swimming hole.
5 great experiences in Puerto Rico to book today
- 🛶 Tanama River cave tubing – Hike through a limestone canyon then go cave tubing along the Tanama River.
- 🌴 El Yunque rainforest – Take a half day tour to the Yunque rainforest with waterslides and rope swings.
- 🤿 Cordillera Keys Nature Reserve – Enjoy an all-inclusive snorkel and waterslide cruise in the Cordillera Keys Nature Reserve.
- 🚣 Two great adventures in one – Combine two great adventures in one: Explore El Yunque rainforest and kayaking at Bio Bay.
- 🥃 Casa Bacardi mixology class – Take a mixology class at Casa Bacardi, the home of rum.
Planning your visit
Old San Juan is compact and walkable, with El Morro, Castillo San Cristóbal, the cathedral and Museo de Las Américas all reachable on foot. The natural attractions further east, including El Yunque, Fajardo’s boat tours and the bioluminescent bays, are easiest to reach by rental car, since they’re spread across the island’s north-east coast rather than clustered in one spot.
Frequently asked questions
How many days do you need in Puerto Rico?
A long weekend covers Old San Juan comfortably. A week or more allows time to add El Yunque, a bioluminescent kayaking trip and a boat tour out of Fajardo without rushing.
What is Puerto Rico best known for?
Puerto Rico is best known for Old San Juan’s Spanish colonial forts, its bioluminescent bays, and El Yunque, the only tropical rainforest in the US National Forest System.
Do you need a car in Puerto Rico?
A car isn’t necessary for Old San Juan itself, which is walkable, but it becomes useful for reaching El Yunque, Fajardo and other attractions along the north-east coast.