El Morro (Castillo San Felipe del Morro)

El Morro, officially known as Castillo San Felipe del Morro, is a historic fortress in San Juan, Puerto Rico, built by the Spanish in the 16th century to defend against pirates and enemies. Located on a strategic hill overlooking the Atlantic Ocean, it features thick walls, battlements, and tunnels. The fortress played a key role in protecting the island's port and trade routes for centuries. Today, it is a UNESCO World Heritage site, offering visitors insight into military history and stunning views of the coast, making it an important cultural and historical symbol of Puerto Rico.