City Build challenges the teams to plan, design and construct a section of a giant model city. Using a wide range of materials, they build an imaginative and creative city that is functional and aesthetically pleasing.

The city has zones such as industrial, residential, leisure and business district, as well as interconnecting infrastructure features like roads, rail and waterways. Planning and strategy through effective cross team communication and collaboration are essential to ensure the zones of the city interconnect and flow.

When the time is up, teams join the sections of the city together and celebrate their success in working towards a common goal.