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
1111 Pennsylvania Avenue Congress changed the height limit for buildings on Pennsylvania Avenue NW from to in 1910 in order to accommodate the Raleigh Hotel. The Raleigh Hotel closed in 1954, and by 1965 developer Jerry Wolman had purchased the site and proposed building the current structure. It was one of the first structures built under the Pennsylvania Avenue redevelopment plan approved in 1964, and the first private building to be built. Because of restrictions imposed by the Pennsylvania Avenue National Historic Site legislation, Wolman agreed to move the building line back from Pennsylvania Avenue by and keep the building's height to ,