Castillo San Felipe del Morro

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For the fort in the Dominican Republic known as El Morro de San Felipe, see Fortaleza San Felipe.
Castillo San Felipe del Morro
FortElMorro SanJuan PuertoRico.jpg
A view of Castillo San Felipe del Morro
Location San Juan, Puerto Rico
Coordinates 18°28′16″N 66°07′27″W / 18.471111°N 66.124167°W / 18.471111; -66.124167Coordinates: 18°28′16″N 66°07′27″W / 18.471111°N 66.124167°W / 18.471111; -66.124167
Built 16th Century
Governing body National Park Service
Official name: Castillo San Felipe del Morro
Type Cultural
Criteria vi
Designated 1983 (7th session)
Part of La Fortaleza and San Juan National Historic Site
Reference No. 266[1]
State Party United States
Region North America and West Indies
Designated October 15, 1966
Part of San Juan National Historic Site
Reference No. 66000930[2]
Castillo San Felipe del Morro is located in Puerto Rico
Castillo San Felipe del Morro
Location of Castillo San Felipe del Morro in Puerto Rico

Castillo San Felipe del Morro also known as Fort San Felipe del Morro or Morro Castle, is a 16th-century citadel located in San Juan, Puerto Rico


Lying on the northwestern-most point of the islet of Old San Juan, Castillo San Felipe del Morro is named in honor of King Philip II of Spain. The fortification, also referred to as el Morro or 'the promontory,' was designed to guard the entrance to the San Juan Bay, and defend the Spanish colonial port city of San Juan from seaborne enemies.

In 1983, the el Castillo was declared a World Heritage Site by the United Nations in conjunction with the San Juan National Historic Site. Over two million visitors a year explore the castillo, making it one of Puerto Rico's leading tourist attractions. Facing the structure, on the opposite side of the bay, a smaller fortification known as El Cañuelo complemented the castillo's defense of the entrance to the bay.

Structure for deployment[edit]


The construction of the Castillo San Felipe del Morro and its surrounding walls began in 1539 when King Charles V of Spain authorized its construction. The purpose was to defend the port of San Juan, by controlling the entry to its harbor. In order to have a viable defense while the rest of the fort was completed, a small proto-fortress was erected during the first year of construction. It is estimated that this section comprises about 10% of the whole structure. But it was not till 1587, that engineers Juan de Tejada and Juan Bautista Antonelli drew the fort's final design, which was based on the established Spanish Military Fortification principles of the times. Thus, similar Spanish fortifications of the 17th-18th centuries can be found in Cuba, Santo Domingo, Dominican Republic, Veracruz and Acapulco, Mexico, Portobelo and Panama City, Panamá, and many other Latin American locations which were part of the Spanish Empire during the Age of Exploration. Many complex additional new structures were added to El Morro over the next 400 years to keep up with the new military technologies. For example, El Morro's outer walls, which were originally constructed six meters thick, were augmented to 18 feet (5.5 m) thickness by the end of the 18th century. Moreover, in 1680, Governor Enrique Enríquez de Sotomayor began the construction of the walls surrounding the city of San Juan, which took 48 years to build. The castillo was part of the Four Lines of Defense along with the San Cristobal Castle, being the San Gerónimo fortress and San Antonio bridge the first line. Today El Morro has six levels that rise from sea level to 145 feet (44 m) high. All along the walls are seen the dome-covered sentry boxes known as garitas, which have become a cultural symbol of Puerto Rico itself. The El Morro or Port San Juan Light was built atop the castillo in 1843, but in 1908, it was replaced by the US military with the current lighthouse. The original lighthouse was destroyed by US warship fire during the 1898 bombardment of the city. Including the exterior open killing grounds, known as the glacis and esplanade, dominated by cannon in the 17th and 18th centuries, El Morro can be said to take up over 70 acres (280,000 m²).


Cannonballs made from stone, iron and lead (16th)

Spanish Rule (1539–1898)[edit]

El Morro

During the Spanish government of the island, El Morro survived several attacks from foreign powers on various occasions. In 1595, Englishman Sir Francis Drake attacked San Juan with his fleet. He failed, however, the Spanish gunners shot a cannonball through his cabin. In 1598, the English attacked again, led by George Clifford, 3rd Earl of Cumberland. Clifford succeeded because he attacked San Juan from land instead of entering through the San Juan Bay. However, an epidemic of dysentery forced him to flee the island.

The Dutch, led by Boudewijn Hendricksz, also attacked the island following George Clifford's idea of invading through land. To the amazement of the citizens, the invaders were able to pass in front of the castle's defenders and into the harbor, where the city's cannon fire could not reach them. El Morro managed to resist the siege and eventually make the Dutch retire, although they were able to sack and burn the city before leaving.

El Morro's last active fight occurred during a naval bombardment by the United States Navy during the 1898 Spanish-American War. Ending the age of naval warfare in the Caribbean, at least in the classical sense. During the Spanish-American War, the castle was attacked at least three times by American naval forces, the most major of which being the Bombardment of San Juan on May 12, 1898.

The short war ended with the signing of Treaty of Paris. Spain ceded ownership of the islands of Puerto Rico, Cuba, Guam, and the Philippines to the United States.

American Military Occupation (1898–1961)[edit]

El Morro and many other Spanish government buildings in Old San Juan then became part of a large U.S. Army post, called Fort Brooke. In the early 20th century, the U.S. military filled up the esplanade, or green space in front of "El Morro" with baseball diamonds, hospitals, officers' quarters, an officers' club and even a golf course.

United States' first shots of World War I were fired from the castillo's battery in 1915. On March 21, 1915, Lt. Teofilo Marxuach was the officer of the day at El Morro Castle. The Odenwald, built in 1903 (not to be confused with the German World War II war ship which carried the same name), was an armed German supply ship which tried to force its way out of the bay and deliver supplies to the German submarines waiting in the Atlantic Ocean. Lt. Marxuach gave the order to open fire on the ship. The Odenwald was forced to return and its supplies were confiscated.[3] The shots ordered by Lt. Marxuach have been considered as the first fired by the United States in World War I. The first actual wartime shot fired by the U.S. came on the day war was declared, during the Scuttling of SMS Cormoran off another small American island, Guam.

During World War II the United States Army added a massive concrete bunker to the top of El Morro to serve as a Harbor Defense Fire Control Station to direct a network of coastal artillery sites, and to keep watch for German submarines which were ravaging shipping in the Caribbean. A lighthouse, rebuilt by the U.S. Army in 1906–08 is the tallest point on El Morro, standing 180 feet (55 m) above sea level. Flagpoles on El Morro today customarily fly the United States flag, the Puerto Rican flag and the Cross of Burgundy Flag, also known in Spanish as las Aspas de Borgoña, a standard which was widely used by Spanish armies around the world from 1506–1785.

National Park (1961–present)[edit]

View of El Morro's entrance

In 1961, the United States Army officially retired from El Morro. The "fort" became a part of the National Park Service to be preserved as museums. In 1983, the Castillo and the city walls were declared a World Heritage Site by the United Nations. In honor of the Quincentennial of the voyages of Columbus in 1992 the exterior esplanade was cleared of palm trees that had been planted by the U.S. Army in the Fort Brooke era, and restored to the open appearance this "field-of-fire" for El Morro's cannon would have had in colonial Spanish times. Parking lots and paved roads were also removed, and the El Morro lighthouse repaired and restored to its original appearance. El Morro was used as a film set in the 1996 motion picture Amistad. Steven Spielberg used it to represent a fort in Sierra Leone where African slaves were auctioned in 1839. African slave labor was used in addition to local labor to help build the castillo. El Morro was a defensive military fortification and a major component of San Juan's harbor defense system. Puerto Rico as such was considered by the Spanish crown as the "Key to the Antilles"; no enemy ship could navigate its waters without fear of capture.

Historical time line[edit]

One of many iconic garitas
Lighthouse of the Castillo San Felipe del Morro.
Castillo San Felipe del Morro
Side view of the Light house of the Castillo San Felipe del Morro and side walls.

1493 – Spanish settlers from Caparra found San Juan.

1508 - Spanish colonized the area

1539 – Construction of the first harbor defenses at El Morro and La Fortaleza authorized by King Charles V.

1587 – Engineers Juan de Tejada and Juan Bautista Antonelli lay out the main design for El Morro still seen today.

1589 – Governor Diego Menéndez begins new construction at El Morro.

1595 – Sir Francis Drake attacks El Morro unsuccessfully by sea. Gunners from El Morro shoot a cannonball through the cabin of Drake's flagship. To impede Drake's ships from entering the bay, a metal chain was drawn across the entrance. Drake was defeated and many of his ships sunk.

1598 – George Clifford, Duke of Cumberland, attacks from the land side in June of this year, the only time El Morro was taken in battle. English forces move into the fortress, however weakened by dysentery they leave in November.

1625 – The Dutch under the command of Captain Balduino Enrico (also known as Boudewijn Hendricksz/Bowdoin Henrick) attacked and invaded San Juan from the "La Puntilla". El Morro held out under the leadership of Spanish Governor De Haro and Captain Juan de Amezquita of the Puerto Rican militia, but the city was sacked and burned.

1630 – Governor Enrique Enríquez de Sotomayor begins construction of the city walls. Work continues until 1678 to encircle the city completely.

1765 – After the siege of Havana in 1762 by the British, King Charles III appoints Field Marshal Alejandro O'Reilly (Alexander O'Reilly) and Royal Engineer Tomás O'Daly (Thomas O'Daly) to reform San Juan's fortifications and reorganize the garrison to make the city a "Defense of the First Order".

1787 - An earthquake damages the structure of both San Felipe del Morro and San Cristóbal.[4]

1797 – Ralph Abercromby (General Ralph Abercromby) and Henry Harvey (Admiral Henry Harvey), with a force of 7,000–13,000 men, invaded the island of Puerto Rico. Captain General Don Ramón de Castro and his forces repelled the attack. Abercromby and Harvey were defeated. This was to be one of the largest invasions to Spanish territories in the Americas.

1825 – Well known Puerto Rican pirate, Roberto Cofresí was jailed and later executed within the fort's walls.

1843 – First lighthouse in Puerto Rico constructed atop the castle.

1898 – On 12 May, US Navy warships shell El Morro in a day-long bombardment, damaging the tip of the main battery. Six months later, Puerto Rico becomes US territory by terms of the Treaty of Paris which ends the Spanish-American War.

1899 - The Department of the Navy rebuilds the lighthouse tower as an octagonal reinforced concrete structure using the iron structure as reinforcement. A new lenticular lens is installed. By 1906 a crack, through and around the top of the tower, directly under the lantern requires its demolition.

1908 – Present lighthouse seen atop El Morro built by the United States Navy.

1915 – First shots of World War I fired by Lt. Teofilo Marxuach on behalf of the United States. Marxuach, a native of Arroyo, Puerto Rico, fired the first shot in what is considered to be the first shot of World War I fired by the regular armed forces of the United States against any ship flying the colors of the Central Powers.[5] Marxuach, who was a member of the "Porto Rico Regiment of Infantry" and Officer of the Day, on 25 March 1915, opened fire on the Odenwald, an armed German supply vessel, as it was trying to force its way out of San Juan's bay.

1942 – El Morro was still an active military post during World War II. The U.S. Army added concrete artillery observation posts and an underground bunker to El Morro to defend against possible German attacks.

1949 – San Juan National Historic Site is established.

1961 – The U.S. Army moves out of the forts of Old San Juan, and they become the jurisdiction of the United States National Park Service, to be preserved solely as museums.

1983 – San Juan National Historic Site declared a World Heritage Site by the United Nations.

1992 – El Morro's grounds are returned to their historic 18th century appearance as part of quincentennial commemoration of the discovery of Puerto Rico by Christopher Columbus when modern roadways and parking lots are removed. El Morro now generates tourism revenue by being open to tours.


See also[edit]


  1. ^ "La Fortaleza and San Juan National Historic Site". UNESCO. Retrieved November 25, 2012. 
  2. ^ "National Register Information System". National Register of Historic Places. National Park Service. 2010-07-09. 
  3. ^ CALLS ODENWALD AFFAIR AN ATTACK, The New York Times, April 7, 1915
  4. ^ El Morro, San Cristobal y San Geronimo en peligro en caso de terremoto on NoticiasOnline (6/7/2009)
  5. ^ "US Naval Institute Proceedings"; "A Breach of Neutrality"; by: Lt. Isaiah Olch, US Navy; Vol. 62; July - December 1936

External links[edit]