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 built a light pipe—a , , prism designed to convey natural sunlight down to all floors and into all offices. On cloudy days and at night, the light pipe is artificially illuminated with a rainbow of colors. The law firm of Morgan, Lewis & Bockius leased the entire building in 2002, and signed a long-term lease renewal in 2014. 1111 Pennsylvania Avenue 1111 Pennsylvania Avenue is a mid-rise Postmodern office building located in Washington, D.C., in the United States. It is tall, has 14 stories, and has a four-story underground parking garage. It is a "contributing" resource to the Pennsylvania