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 March 4, 1805, was the first to host an inaugural procession down Pennsylvania Avenue. The city's first school, the Western School, opened on the south side of Pennsylvania Avenue between 17th and 18th Streets NW in January 1806. The city's first sewer pipe was laid under Pennsylvania Avenue in 1829. By 1835, Pennsylvania Avenue was largely lined by two- to four-story Federalist row houses. The Baltimore and Potomac Railroad converted a house at the corner of 2nd Street NW and Pennsylvania Avenue into the city's first train station. It was abandoned in 1851 when the station moved to a more