How do you make a 3d model of the rialto bridge out of cardboard?

To create a 3D model of the Rialto Bridge using cardboard, start by gathering materials such as cardboard sheets, a craft knife, glue, and a ruler. Begin by sketching the bridge's design and dimensions, then cut out the base and structural components from the cardboard. Assemble the pieces by gluing them together, ensuring to replicate the bridge's iconic arches and details. Finally, paint or decorate the model to enhance its realism and accuracy.