The narrow and often steep granite-paved streets of Cagliari’s Castello District are a reminder of a bygone age when the town was dominated at first by Pisans, and later by the Aragonese. Built from white limestone, the walls and towers of the Old Town shimmer in the sun and are a magnificent sight, especially if you are lucky and approach the city from the sea, as the English novelist D.H. Lawrence did in 1921 when he described the Old Town as looking like a "Jerusalem without trees".

Cardiff, the youngest capital city in Europe, is known for its castle, art, dragons, river, Victorian arcades, parks, rugby, music, university, bay, and Brains beer. This diverse list of attractions means that whether you enjoy art, rugby, historical castles, modern architecture, classical music, or new bands in pubs, Cardiff has something for everyone.

Kerala’s first city, with its knotty official name of Thiruvananthapuram (often substituted by the shorter, more manageable Trivandrum), is a rich introduction to southern India's urban and cultural life. Trivandrum tends to be unjustly overlooked en route to the state's beachside settlements but easily warrants a few days of its own.

Graz – Austria’s culinary and cultural capital. A practical tip from the start: If you want to explore Graz, wear comfortable shoes and loose clothing. Why? Even if Graz is actually small — the second-largest city in Austria with a quarter of a million resident by no means a “big city” — you should be prepared for the fact that time also flies in the many short lanes. Comfortable footwear goes easy on busy feet here. In the historic old town with its roads, streets, squares and courtyards there’s lots to explore and even more to enjoy.

Cartagena is the undisputed queen of Colombia's Caribbean coast and easily the most attractive city in the region — this given its apparent shortage of attractions in the classical sense of the word. Instead, what draws travellers in is the city itself: a microcosm of the Caribbean, walled in by defensive ramparts built to ward off unwelcome visitors, the likes of Sir Francis Drake, who held Cartagena de Indias captive for months during his 16th-century raids on the Spanish New World.