Visit this top attraction to learn the history behind one of Spain's major military engineering marvels, from colonization to the Second World War.
Few landmarks are more representative of Puerto Rico's legacy within the Caribbean and the Americas than Castillo San Felipe del Morro, better known as El Morro. This fortification on the corner of the islet of Old San Juan now greets cruise ships as they leisurely sail in and out of the bay. During most of its nearly 500-year history, it was an important military outpost for Spain and later the United States.
When you walk through the narrow entrance and see the flags waving in the Atlantic breeze, it's easy to be transported to another time in history and imagine soldiers in antiquated uniforms marching along the edge of the wall where cannons fit snuggly into the embrasures.
When you visit, you will learn about El Morro and the Island's history itself – why Puerto Rico's strategic location in the Caribbean made it an important port for those trying to expand their reach in the New World, and how the United States used the fort during both World Wars.
Here's what you need to know when you come to visit!
What is El Morro?
El Morro—formally known as Castillo San Felipe del Morro—is one of the most iconic landmarks in Puerto Rico and a must-see when visiting Old San Juan. This massive 16th-century fortress was built by Spanish colonizers to defend the island from sea attacks, standing watch over the entrance to San Juan Bay for centuries.
Designated a National Historic Site, El Morro is more than just a historic San Juan fort—it’s a symbol of Puerto Rico’s resilience and cultural legacy. Visitors can explore its maze-like tunnels, climb up to cannon-lined walls, and soak in sweeping ocean views that once served as the island’s first line of defense. Whether you're a history buff or just seeking a memorable stop in Old San Juan, El Morro offers an unforgettable glimpse into the island’s colonial past.
Ocean views at Castillo San Felipe del Morro in San Juan.
When you visit, you will learn about El Morro and the Island's history itself – why Puerto Rico's strategic location in the Caribbean made it an important port for those trying to expand their reach in the New World, and how the United States used the fort during both World Wars.
Here's what you need to know when you come to visit!
A Brief History of El Morro
Old San Juan was founded in 1521 by Spanish settlers. The first fortification, La Fortaleza (The Fortress), began construction in 1533 and currently serves as the governor's mansion. The Castillo San Felipe del Morro, or El Morro, was the second fort built on the islet of what is now Old San Juan and Puerta de Tierra. El Morro's construction commenced in 1539 and finished in 1790; during those 250 years, El Morro went from a promontory mounted with a cannon to a six-level fortress designed to unnerve attackers approaching from the sea.
A half-mile across the mouth of the Bay of San Juan is another, smaller fort called Fortín San Juan de la Cruz, known as El Cañuelo. When enemy ships would try to enter the bay, the two forts created a crossfire that effectively closed the bay entrance and the rest of San Juan. Thanks to El Morro (and El Cañuelo), the Spaniards were able to defend Puerto Rico from invasions by the British, Dutch, and pirates.
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In 1898, due to the Spanish-American War, the Island changed hands from Spain to the United States. El Morro was designated as part of Fort Brooke and actively used as a military installation during the First and Second World Wars.
In 1961, the US Army retired El Morro, passing it on to the National Park Service to establish a museum. In 1983, El Morro and the walled city of Old San Juan were declared UNESCO World Heritage Sites.
Crowds enjoying a sunny day on a field outside Castillo San Felipe del Morro in San Juan.
Planning Your Visit
El Morro is open seven days a week from 9:30 a.m. to 4:30 p.m. The entrance fee is $10 for adults, and children under 15 years of age have free admission. On certain days of the year, the National Park Service offers free entry to all visitors, including Martin Luther King, Jr. Day in January, National Park Week in April, and Veterans Day in November. The receipt will also allow you to visit the other fort, Castillo San Cristóbal, without having to pay a separate entrance fee (and vice versa).
Getting there
El Morro is located at the far northwestern tip of Old San Juan, making it easy to reach on foot if you’re already exploring the historic district. If you're coming from outside Old San Juan, public transportation like the AMA bus system offers routes that stop nearby, or you can drive and park in one of the paid lots close to the entrance. From there, it’s a short walk to Castillo San Felipe del Morro, one of Puerto Rico’s most visited landmarks.
What to Bring
Be sure to bring water, sunscreen, and a hat to stay cool and protected. A camera is essential to capture the stunning views of El Morro, and don’t forget your ID for entry. Comfortable shoes are also a must for exploring the fort’s ramps and courtyards.
Clothing Tips
Wear weather-appropriate clothing and shoes. Much of the fort's inner courtyard is exposed and can get quite hot during sunny days; loose, light-colored clothing, shorts, and sunscreen are highly recommended. And drink plenty of water! On rainy days, the ramps leading to the different levels can be quite slippery. Best to wear sturdy footwear with good traction. The fort is also very windy, so skirts and dresses are not recommended, and you'll want to hang on to your hats.
El Morro provides a unique and stunning location for your special event.
Exploring El Morro
As you approach El Morro, you’ll cross a large lawn leading to the fort’s entrance. After paying the entrance fee, you can join a park ranger-led tour in English or Spanish, or explore the fort on your own at your own pace.
Immersive Historical Exhibits
Inside El Morro, you’ll find re-creations of military barracks and kitchens, along with informative exhibits detailing the fort’s evolution and strategic role in defending San Juan and Puerto Rico.
Breathtaking Views from the Fort
The lower levels of the fort offer stunning views of the Atlantic Ocean and El Cañuelo, a nearby island fort. This area is the perfect place to take some impressive vacation photos. From the higher levels, enjoy sweeping views of Old San Juan, Santa María Magdalena de Pazzis Cemetery, and the La Perla neighborhood. Access the Paseo del Morro from the fort’s dry moat, and take a 1.5-mile walk along the city’s outer walls with beautiful views of San Juan and the coastline. The path leads to the Gate of San Juan, offering more scenic exploration.
Fly a Kite: A Local Tradition
Relax on the lawn outside El Morro and participate in the local tradition of flying a kite. The steady winds and expansive green space make it the perfect spot to enjoy the fort’s stunning views while taking part in a cherished Puerto Rican pastime.
Plan Your Escapade to Puerto Rico
Plan your Puerto Rico escapade and explore the iconic El Morro and the vibrant streets of Old San Juan for an unforgettable experience.
San Felipe del Morro FAQs
What are El Morro opening hours?
Castillo San Felipe del Morro is open daily from 9:00 a.m. to 5:00 p.m., except on Thanksgiving, Christmas, and New Year's Day.
How much are the tickets to El Morro?
Entrance fees to Castillo San Felipe del Morro are $10 for visitors aged 16 and older; children 15 and under enter free. This ticket grants access to both El Morro and Castillo San Cristóbal.
When is admission to El Morro free?
El Morro offers free admission on select days each year as part of the National Park Service’s fee-free program. These include Martin Luther King Jr. Day (January), National Park Week (April), and Veterans Day (November). On these days, visitors can explore both El Morro and Castillo San Cristóbal without paying the usual entrance fee.
When is the best time to visit El Morro?
The best time to visit El Morro is early morning or late afternoon, when the weather is cooler and crowds are smaller. Weekdays are less crowded, and visiting from May to November offers a more relaxed experience. To avoid the heat, aim for the cooler parts of the day or enjoy the sunset views.
How long does it take to tour El Morro?
Touring El Morro typically takes about 1 to 2 hours, depending on your pace and interest level. That gives you enough time to explore the tunnels, climb the ramparts, take in the ocean views, and read the historical exhibits. If you're a history buff or love photography, you might want to linger a bit longer.
What can you do at El Morro?
At El Morro in San Juan, you can explore centuries-old tunnels, climb stone staircases, and walk along towering ramparts with stunning views of the Atlantic Ocean. Inside the fort, exhibits and artifacts tell the story of Puerto Rico’s colonial history and military past. Outside, the expansive green lawn is perfect for picnics or flying kites—an iconic local pastime. Whether you're a history buff or just soaking in the views, El Morro offers a memorable experience for all ages.
How long did it take to build the Castillo de San Felipe del Morro?
The construction of Castillo San Felipe del Morro began in 1539 and continued for over 250 years as the fort evolved to meet new military needs and threats. The original structure took several decades to complete, but major expansions and enhancements—like additional levels, walls, and bastions—continued well into the late 18th century. Its long construction timeline reflects the fort’s strategic importance in defending San Juan from seaborne attacks.
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