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 long-lasting location at New Jersey Avenue and C Street NW. The same year, the National Theatre opened on December 7. It was followed by the 400-seat Odeon in 1846, the 1,000-seat Adelphi in 1847, and Metzerott Hall in the 1860s. President Andrew Jackson approved the construction of the Treasury Building in 1836 (it was completed the following year), but the size and height of the building forced a rerouting of Pennsylvania Avenue and blocked the view of the White House from L'Enfant's "Grand Avenue." The city's first stock brokerage was opened by William W. Corcoran at 15th and Pennsylvania Avenue