In pictures: Children discover Delhi's wonders

The rural children also met students from some of Delhi's "posh" schools.

Goonj runs a project called School to School and the organisers put up posters to educate privileged students in cities. The concept of School to School is simple - wealthier students donate their discarded uniforms, books and other accessories.

All is collected, sorted and then sent to schools in remote areas where it is distributed among thousands of poor students.