The maze of streets crisscrossing the historic centre is an invitation to explore Mexico City's emblematic buildings. The Templo Mayor and its museum are reminders of the Aztec presence; the Palacio Nacional and Catedral Metropolitana lining the Zócalo, Mexico City's vibrant hub, date back to New Spain; and the Latinoamericana Tower has been reaching for the sky since the early 20C. For those who feel like diving in, the hustle and bustle is constant in this quarter, which is currently being spruced up in a large-scale renovation programme.