Since planting began at the Arboretum over 20 years ago, many people have contributed to our story, from our founders with their germ of an idea, to each of our 300,000 visitors each year. To mark the 20th anniversary of our official opening we are sharing the stories of just some of those connected with our 150-acre site. Commander David Childs CBE is one of the founders of the National Memorial Arboretum. He was inspired to create a year-round national centre of Remembrance after visiting Arli

Check out this video with 7 WTC architect David Childs as he discusses the ultra-modern skyscraper's construction, design, and features at the building's opening in 2006. | World Trade Center