Nano/micro-structured ceramics combine the unique features of ultrasmall building blocks and their organization into tailored architectures to foster new properties up to the macroscale. Many functional applications open up, such as in catalysis, energy and optoelectronics. One of the current main challenges in materials science and engineering is the fabrication of such multiscale materials in bulk, defect-free form. This work presents a new processing routine, consisting in the strategic combination of colloidal assembly and spark plasma sintering or infiltration techniques, which, together with upscaling, leads to a greatly enhanced combination of mechanical properties and the introduction of multifunctionality. By applying this processing routine to an iron oxide-based system, the option of tuning the magnetic behavior of the nanoceramics is integrated, up to the development of a bulk superparamagnetic material.