Mexico City is a sprawling metropolis which over 20 million people now call home. Capital of the New World, the conquistadors constructed a model city based firmly on traditional Spanish design. The result is a historically rich city centre, where you can walk around the well laid out plazas, marvel at the many opulent churches and cathedrals or take time out in a traditional café bar.

To the north, the site of Teotihuacán was, in its day, the world’s sixth largest city. Yet by the time it was ‘discovered’ by the Aztecs it was deserted and in ruins. Today the site is still dominated by the imposing Sun and Moon Pyramids, the former being the world’s third largest.