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.

The tower — the remains of the main land gate entrance into the old city — houses a bookshop on the ground floor. Upstairs, touch screens provide a virtual journey through Alghero’s history, and a top floor terrace offers panoramic city and harbour views.

Being a national monument, St. Johns Cathedral is 's-Hertogenbosch' pride and joy. This majestic church, built between 1370 and 1529, expresses the wealth of 's-Hertogenbosch in the late Middle Ages. St. Johns Cathedral is luxuriously decorated with statues, pointed arches, figurines, and large windows. The tower, which is 43 metres high, is open to the public. St. Johns Cathedral is located at the Parade.

Housed in a cube-shaped modernist building, the National Science Museum is a great stop for families. Its interactive exhibits cover science, the environment, and the world around us, giving kids and adults alike a chance to explore, experiment, and spark some curiosity.