2007 Park Hill Garden Tour. Transform your outdoor living space into an urban oasis. VIEW GALLERY. Sarah Christian is an award winning, registered landscape architect located in the Stapleton development serving the central Denver, Colorado area. Her eye for landscape design can help you turn your outdoor space into a beautiful and unique Urban Gardens | Landscape Architect and Designer in Stapleton Please note: You are currently browsing img picture of small urban gardens that is 648x486px in size. This image is listed in urban garden ideas category. Urban Gardens Landscape Architect and Designer in Stapleton, 648x486 in 84.55 KB.