Monheim house, a remodelled 17th century pharmacy, has housed the collection of Couven Museum since 1958. Showcasing Directoire, Empire, and Biedermeier-style period rooms, it also features a historic pharmacy, kitchen, and porcelain tiles collection. It's a fascinating visit for those interested in art and the lifestyles of the upper classes during those periods.

Enclosed within a protective wall reaching up to 20 metres in width, the Ciudad Amurallada (or Walled City) is Cartagena's old beating heart. Packed with well-preserved colonial buildings, it's a pleasure to stroll through; its streets of colourful low-rise merchant homes marked by iconic balconies are now mostly walked by either tourists or students who attend classes at the University of Cartagena during the day and linger for meals and nightlife after school is out. Cafes in Plaza Aduana and Plaza Santo Domingo teem with patrons, forging an incredibly jovial atmosphere; the districts of San Diego and El Centro are two not to be missed. There is plenty of food and shopping to be had, with a mixed bag of world-class restaurants and street food hawkers and the incredibly photogenic palenqueras — women dressed in vibrantly coloured clothing selling fruit in the streets — images of whom have become emblematic of Colombia as a travel destination.

It would be a shame to be on the Caribbean coast and not take a boat ride out to sea. One of the best ways to enjoy a bit of naval activity and get ready for a fun night ahead is to take a romantic boat trip at sunset. The trips usually depart around 4:30pm and give you a couple of hours under the sails. Enjoy magnificent views of the city skyline, with plenty of time to take photos in the golden hour, enjoy the snacks and drinks on offer, or just sit back and watch the sun dive into the Caribbean waters.

Frankfurt Cathedral, with its 95-metre tower, dominates the city centre's skyline. Dedicated to St Bartholomew in 1239, it became the site of imperial coronations for the Holy Roman Empire, with ten kings crowned here between 1562 and 1792.