The Catedral de Santa Catalina de Alejandría in Cartagena, Bolívar, Colombia, is a stunning example of colonial architecture and a must-visit when exploring the historic walled city. Easily accessible on foot as part of a walking tour of Cartagena's Old Town, this architectural gem is best visited during the cooler months from December to March when the weather is more pleasant. No entrance fee is required, making it an economical stop. A visit can take around 30 minutes to an hour, depending on your interest in architecture and history. To fully appreciate its rich history and significance, consider joining a guided tour that covers Cartagena’s broader historical narrative, or explore solo if you prefer a more flexible pace. Keep in mind that while the cathedral is open to visitors, visiting during a service might restrict some access.