In 2018, 15 primary schools with a total of 350 children participated in the ‘Cardboard City Challenge’ installation. A further 150 students from local colleges and universities volunteered for the event. It was a collective effort of 500 students working together to design an ‘Imaginary Future City’ from recycled cardboard with an approximate 600 m2 footprint. The event was a success with 4,000 people from the public turning up during the last two days of ‘Cardboard City Play Day’. Architecture plays an important role in inspiring everybody, especially the younger generation. Thus, we aim to seek creative designs from the public through this interactive family event. In addition, the event had also included competition to design Cardboard Pavilion to house creative learning activities for children and inspire them through architectural spatial experience.