Next to the fence were several memorials including a bronze plaque of names, flags, and a large cross. The temporary memorial also included a row of small wooden angels, one for each passenger or crew member. There were also handwritten messages on the guardrails at the memorial. At the memorial site, there was also a small building where visitors could sign a guestbook. The building was staffed by National Park Service volunteers, called ambassadors, who answered questions. In the years following the attacks, approximately 150,000 visitors each year came to the memorial site, a number that reached "nearly a million people" as of July 2008.