The extensive, pedestrian-friendly walls that surround the old city were built in response to Francis Drake’s siege of Cartagena in 1586. The best way to explore the iconic landmark is by foot, enjoying the warm sea breeze as you enjoy views of the picturesque streets. Dawn is a good time to explore the Murallas and assure the best possible pictures of your trip. Someone suggested we bring along crackers, cheese and wine and let time elapse as we watch the sun go down, an experience we very much enjoyed. You could also head to the far corner of the wall and up to the Café del Mar, grab a sunset cocktail and then move on after the sun has disappeared for the day.