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
Pennsylvania Avenue National Historic Site War. Two of the city's first three street lamps were established in the area near Capitol Hill in December 1801. Center Market, the city's first food market, was built the same year on a lot on the south side of Pennsylvania Avenue between 7th and 8th Streets. It became the hub of the city's early commercial district. Over time, the business district moved north, but its southern boundary continued to be marked by Pennsylvania Avenue. Center Market moved a block west along Pennsylvania Avenue to larger, more modern facilities in 1872. The second inauguration of Thomas Jefferson, which occurred on