Pennsylvania Avenue lighthearted celebrations, including a series of day- and nighttime Shriner's parades in the 1920s and 1930s. Thomas and Concepcion Picciotto are the founders of the White House Peace Vigil, the longest running anti-nuclear peace vigil in the US, at Lafayette Square on the 1600 block of Pennsylvania Avenue. After the Oklahoma City bombing in 1995, the Secret Service closed the portion of Pennsylvania Avenue in front of the White House to all vehicular traffic. Pedestrian and bicycle traffic, however, was still permitted on the sidewalk. After 9/11 this policy was made permanent. Near the White House traffic is redirected to
Avenue House Grounds commission a statue of former local resident Spike Milligan cast in bronze by local sculptor John Somerville and erected by the stables block in the grounds of Avenue House. The statue of Spike sitting on a bench was unveiled on 4 September 2014 at a ceremony attended by a number of local dignitaries and showbusiness celebrities including Roy Hudd, Michael Parkinson, Maureen Lipman, Terry Gilliam, Kathy Lette, Denis Norden and Lynsey de Paul. Avenue House Grounds Avenue House Grounds is a ten-acre (four hectares) Site of Local Importance for Nature Conservation on East End Road in Church End, Finchley in