Castillo San Felipe de Barajas.

Castillo San Felipe de Barajas, an iconic fortress in Cartagena, Colombia, was built in the 16th century as a defense against pirate threats. Initially called Castillo de San Lázaro, it was expanded and renamed in honor of Philip IV of Spain in 1657. Designed by Spanish engineer Bautista Antonelli, the castle features a formidable triangular structure with intricate walls, expansive tunnels, and a sophisticated defense system, making it nearly indestructible. Perched on a hilltop, it offers stunning views of the Caribbean Sea and the city below. Today, it acts as a cultural venue, hosting events that celebrate Cartagena's heritage. In 1984, it was recognized as a UNESCO World Heritage Site, highlighting its historical significance.