Urban parks are an affordable way to revitalize cities while providing proven positive health and economic benefits to residents. In the last two decades, urban parks have gone through a renaissance. Philanthropy, creative financing sources, public demand, community action and adaptive reuse projects have brought about a new era of urban parks. What challenges still exist? How do we ensure every urban resident has a park within a ten minute walk? How do we enable underserved communities to design, build and maintain parks?