Making hybrid materials based on Metal-Organic Polyhedra (MOPs) is quite limited possibly due to stability of MOPs and lack of synthetic protocol. In this presentation, a series of mechanically stable MOPs with permanent porosity are presented. Their metal joints are based on Zr clusters, similar to those found in well-established UiO-66. Utilizing these robust MOPS, we have further synthesized polymeric MOPs crosslinked by alkyl chain molecules. We will show similarities and differences between metalorganic frameworks and these new class of materials.