an episode of cbs's "60 minutes" in 2010 was about the lack of work done at ground zero. it focused on how most of the buildings did not have a date for completion, the main building, one world trade center (originally called the freedom tower), having gone through three different designs, and the delays and high amount of money that went into the rebuilding. larry silverstein said that the entire site would be completed in 2037, and that billions of dollars have been spent on rebuilding the site, even though ground zero "is still a hole in the ground." during an interview for the episode, silverstein said, "i am the most frustrated person in the world...i'm seventy-eight years of age; i want to see this thing done in my lifetime." however, it was said in early 2011 that a lot of work has been done on the site, with all five buildings under construction. all of the buildings will be completed between 2012 and 2016. criticism of the work being done at ground zero was made in 2008 and 2009, when there was no work being done at the site.