Heller & Metzger in Washington, DC
  • Seal and Sea Lion Exhibit and Life Support Facility, National Zoological Park

  • National World War II Memorial

  • National Museum of the American Indian

  • National Gallery of Art Stone Repairs

  • Martin Luther King Jr. National Memorial

  • John F. Kennedy Center for the Performing Arts, Concert Hall

  • FDR Memorial

  • Asia Trail, National Zoological Park