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.

Leeds Dock, formerly Clarence Dock, was built in 1843 for ships sailing in the Leeds and Liverpool Canal, and represents today a major attraction in the city, counting over 1 million visitors every year. It is a lovely area for a walk and, in addition to the numerous boutiques, restaurants and cafes, it houses the Royal Armouries Museum, one of the most important among the city nuseuns, and also provides an excellent water taxi service, which will offer you a free ride to several sights of the city.

Immerse yourself in the fascinating world of medicine, learn about the history of healthcare, and discover the medical innovations that changed the world at this interactive science museum adjacent to St James's University Hospital.

The building of the Croatian National Theatre was completed in 1895, and it perfectly presents the architecture of this amazing country. As its name implies, it is not only the theatre of Zagreb, but the national theater of Croatia. It awaits you with some of the best art pieces of the country. Check out their website for the different ones such as drama, opera, or ballet.