The Castillo de San Felipe de Barajas is a fortress, originally known as Fuerte de San Felipe de Barajas. Built in 1536 on the San Lázaro hill, it was enlarged several times during the Spanish rule. This impressive military work was key in the defense of the city against the continuous sieges of the English and French, such as the one led by Baron de Pointis in 1697.

Recognized as a World Heritage Site by UNESCO in 1984, the castle is part of Colombia's cultural heritage. Over the centuries, it has been restored and maintained to preserve its integrity, becoming a tourist attraction and a stage for important events, such as the VI Summit of the Americas in 2012. Its strategic location, 40 meters above sea level, allowed its defenders to monitor any enemy movement, providing a crucial tactical advantage.

Throughout its history, the fortification has undergone major restorations, including infrastructure improvements and the implementation of a multilingual tour guide system to enrich the visitors' experience. The castle, with its cannons, tunnels and plazas, is a testament to Spanish military architecture in the Americas and remains one of the most emblematic monuments on the continent.

It has also received several international recognitions, such as TripAdvisor's Certificate of Excellence and its inclusion in the list of the seven wonders of Colombia.