Green Campaign Building 'Mysterious' Structure Downtown

SACRAMENTO (CBS13) - The city of Sacramento is setting up a mysterious object to encourage people to go green.

On Monday, the Cut Your Cubes campaign began erecting a 30-by-30 foot cube made of scaffolding and mesh fabric at 11th and K Streets.

The cube represents something generated by the average Sacramento household.

But what is it exactly? According to the project's website, cutyourcubes.com, if you correctly guess what that thing is, you can be eligible to win $500.