The resulting structure displays the key features of the gyroid with a wall thickness of 250 μm that retains its highly interconnected pore structure. As a demonstration of the improved printability and the effect of the PEGDA concentration, a large-scale "gazebo" structure was fabricated using 5 wt.%, 10 wt.%, or 15 wt.% PEGDA with 0.5 wt.% alginate, which is shown in Figure , and viscosity provided in Supporting Figure . Positioned side-byside and submerged in water, the three gazebo samples show that the opacity of the hydrogel increases with higher PEGDA concentrations, potentially due to the short length of the PEG chains used . The gazebo design provides several perspectives, including thin column formation, "rooftop ridgelines," and an overhead dome that is properly formed in all fabricated samples.