San Juan, Puerto Rico's capital and largest city, sits on the island's Atlantic coast. Its widest beach fronts the Isla Verde resort strip, known for its bars, nightclubs and casinos. Cobblestoned Old San Juan features colorful Spanish colonial buildings and 16th-century landmarks including El Morro and La Fortaleza, massive fortresses with sweeping ocean views, as well as the Paseo de la Princesa bayside promenade.
Castillo San Felipe del Morro also known as Fuerte San Felipe del Morro or Castillo del Morro, 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.
Old San Juan is a historic district located at the "northwest triangle" of the islet of San Juan. Its area roughly correlates to the Ballajá, Catedral, Marina, Mercado, San Cristóbal, and San Francisco subbarrios of barrio San Juan Antiguo in the municipality of San Juan, Puerto Rico.