April 19, 1995 was one of the darkest days in America's history. When you visit this memorial, you will see 168 empty chairs—one for each person killed. The most moving thing to see, however, is the part of the fence that has been left over from the makeshift memorial that stood here for five years. On it, you will see letters, photos, flowers and more left by survivors and visitors. Notice the Survivor Tree, it has become a symbol of hope to the people of Oklahoma City. Admission to the outside memorial is fee, but the museum charges a fee.