Oaxaca City's zócalo, or main square, is the place where lovers snuggle on park benches and visitors enjoy long, leisurely lunches at outdoor cafés.

Mexico City's Zócalo is one of the largest urban squares in the world.

Vectorial Elevation was an interactive artwork designed to transform the Zócalo public square in Mexico City.

Coffee on the seventh floor terrace of the Majestic Hotel overlooking the Zócalo, the city's enormous main square.

Her glass-and-steel office, which overlooks the Zócalo, feels like a curious hybrid of an internet startup office and an architectural practice.

To Err Is Creative in Net Art Vectorial Elevation was an interactive artwork designed to transform the Zócalo public square in Mexico City.

On Thursday night, three groups of students are due to lead separate marches which will converge at the capital's main Zócalo plaza around nightfall.

The march was marked by an outbreak of violence as a small group of protesters clashed with riot police in the city's central Zócalo plaza.