3. OvS: LANDSCAPES OF NATIONAL SIGNIFICANCE IN THE U.S. CAPITAL 1980 Albert Einstein Memorial 1978 Federal Reserve Gardens 1985 International Chancery Center 1990 Olmsted Walk III at The National Zoological Park National Arboretum New American Garden 1989 1986 German-American Friendship Garden
4. OvS: LANDSCAPES OF NATIONAL SIGNIFICANCE IN THE U.S. CAPITAL 1980 Albert Einstein Memorial 1978 Federal Reserve Gardens 1985 International Chancery Center 1990 Olmsted Walk III at The National Zoological Park National Arboretum New American Garden 1989 1986 German-American Friendship Garden 1993 Francis Scott Key Park 2004 National Association of Realtors Corporate Headquarters 1996 Pennsylvania Avenue 2004 World War II Memorial 2007 Martin Luther King Jr. National Memorial 1996 Ronald Reagan Washington National Airport