Armadillo World Headquarters (The 'Dillo or Armadillo WHQ) was an influential Texas music hall and beer garden in Austin at 5251⁄2 Barton Springs Road – at South First Street – just south of the Colorado River and downtown Austin. The 'Dillo flourished from 1970 to 1980. The structure that housed it, an old National Guard Armory, was demolished in 1981 and replaced by a 13-story office building.