Nassau Bay's Space Walk Plaza is barely more than a median in one of the access roads to the Clear Lake-area bedroom community. But it's across from Johnson Space Center, and thanks to sculptor Eric Ober, it's one of Houston's most unique points of interest. Five years in the making and dedicated in spring 2013, the plaza boasts a dozen or so steel monuments marking various milestones in the manned space program's 50-year history: the Gemini and Apollo missions (including Buzz Aldrin with the American flag and Neil Armstrong on the ladder of his capsule); a typical shuttle launch; the International Space Station; an adorable depiction of the Mars Opportunity rover; and a fountain-situated earth-moon centerpiece. NASA's funding may have seen better days, but thanks to Ober, the agency has inspired a collection of public art any community can be proud of — especially this one.