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 more in tune with the nearby Evening Star building addition next to it on Pennsylvania Avenue, and two stories were added. The total interior space increased from to . The front entrance was moved from 12th Street NW to Pennsylvania Avenue NW, and the address changed to 1111 Pennsylvania Avenue NW. The architect of record for the structural renovations was Shalom Baranes Associates. Studios Architecture designed the interiors. An existed between the renovated structure and the Evening Star building addition to the east. In order to create natural light in the office windows facing the Evening Star building, Studios Architecture