Two design competitions determined the direction of the master plan at Ground Zero and the concept and position of the 9/11 memorial and museum. Ultimately the memorial, museum, and landscaped plaza encompassed eight of the sixteen acres of the World Trade Center site. The very public and political process of creating the cultural institutions on that half of the site was the subject of an enlightening discussion on September 21, 2021, with Craig Dykers, Gary Hack, Lynne Sagalyn, and Frank Sciame, Jr. that can be viewed on video. Meanwhile, on the other eight acres, five skyscrapers that would replace the 10 million sq. ft. of office space in the destroyed World Trade Center moved forward, with the key player being the private investor-developer, Silverstein Properties. While the replacement for the collapsed 7 WTC rose quickly, the other towers stalled. Today, after many revisions in design and repositions of ownership, three of the masterplan buildings are completed, while Tower 2 has stump foundations and an indeterminate future. The problematic site on the southern edge of the memorial plaza for a mixed-use Tower 5 has recently been announced.