Most people enter the Hiroshima Castle Grounds from the south (across from the Museum of Art) by walking over the wooden Gate Bridge and beneath this Main Gate. Both are historical reproductions. You then enter the Ninomaru (second compound). Before crossing the moat into the main compound (Honmaru) there is an eucalyptus tree that endured the blast. Just on the other side is a surviving willow. Only one other tree near the Hypocenter remained standing after August 6, 1945.