Chris Michael – The 2014 World Cities Day Challenge: Champion Your City’s Best Idea

Groundbreaking … Kunlé Adeyemi’s floating school in Makoko, Lagos, Nigeria

September, 2014. Guardian Cities and UN-Habitat want to hear one idea, pioneered by your city, that other cities should adopt. Could you be the person to represent your city?

This 31 October, it will be time to dress up, show off your best ideas and maybe even scare a few people. You guessed it: it’s the inaugural World Cities Day.

To celebrate the big event, Guardian Cities and UN-Habitat hereby announce the World Cities Day Challenge. We want to hear the best ideas from cities around the world – one idea, pioneered by your city, that other cities should adopt. And you could be the person to represent your city on the big day.

Every city has different ideas that make it great, from the first skyscrapers and metros in New York and London to more recent innovations like congestion charging, bike sharing, buried expressways or floating schools. What unique venture can your city boast to the rest of the world – something that would make a real difference to the lives of residents of other cities?

If you think you’ve got what it takes to be the representative of your city’s best idea, we want to hear from you now! We’ll pick one individual or group per city, who will each get their own slot on the Guardian Cities website to present their idea over the course of 31 October.