An incomplete list of cities already doing Open Streets include:
Aotearoa, New Zealand
Austin, Texas, USA
Bogotá, Colombia
Boston, Massachusetts, USA
Brookline, Massachusetts, USA
Budapest, Hungary
Burlington, Vermont, USA
Calgary, Canada
Cambridge, Massachusetts, USA
Cleveland, Ohio, USA
Cologne, Germany
Denver, Colorado, USA
Des Moines, Iowa, USA
Duluth, Minnesota, USA
Edmonton, Canada
Hackney, United Kingdom
London, United Kingdom
Louisville, Kentucky, USA
Manchester, United Kingdom
Mexico City, Mexico
Minneapolis, Minnesota, USA
Montgomery County, Maryland, USA
Montreal, Canada
Oakland, California, USA
Palo Alto, California, USA
Philadelphia, Pennsylvania, USA
Pittsburgh, Pennsylvania, USA
Portland, Oregon, USA
Quincy, Massachusetts, USA
San Francisco, California, USA
St. Louis, Missouri, USA
St. Paul, Minnesota, USA
Stuttgart, Germany
Sydney, Australia
Vancouver, Canada
Victoria, Canada
Vienna, Austria
Winnipeg, Canada