A small but genuine volcanic cone standing 13 metres high in a residential neighbourhood south of the historic centre. Cuexcomate is often billed as the world's smallest active volcano — though dormant since the 19th century, when the nearby Popocatépetl eruption sent a mudslide that formed the cone. A metal staircase spirals down into the hollow interior, which is about 23 metres deep.
Local history holds that the cone was used for storing food and, rather more grimly, for disposing of the dead in certain periods. Today it sits in a small plaza with a playground and is visited mainly by curious travellers and local school groups. It is a 20-minute taxi ride south of the Zócalo; worth combining with a visit to Cholula, which lies in the same direction. Entry is free.