StartupCity Des Moines will have a closing party Aug. 22 at 5 p.m in its office at 317 Sixth Ave. It will close its doors to the public on Aug. 29. Founded by Christian Renaud and Tej Dhawan, StartupCity opened in late 2011 as an incubator for technology-based startups. The founders secured funding for three years, but since opening, the space became more of a coworking space for entrepreneurs than an incubator. Geoff Wood's Gravitate space will aim to replace StartupCity as a startup hub in downtown Des Moines.