Trappe (Pennsylvania German: Drapp) is a borough in Montgomery County, Pennsylvania, United States. The population was 3,509 at the 2010 census. Augustus Lutheran Church, built in 1743, is the oldest unchanged Lutheran church building in the United States in continuous use by the same congregation.
building, a usually roofed and walled structure built for permanent use. Rudimentary buildings were initially constructed out of the purely functional need for a controlled environment to moderate the effects of climate. These first buildings were simple dwellings.