Halifax is among:
Adelaide, Al Quds, Amherst, Amman, Amsterdam, Asturias, Bard (NY), Basel, Beirut, Belfast, Berkeley, Bern, Bethlehem, Bilbao, Birzeit, Bogota, Bologna, Bordeaux, Boston, Brantford, Brisbane, Brussels, Canarias, Cantabria, Cape Town, Caracas, Castellon, Cleveland, Connecticut, Denver, Dublin, Dundee, Durban, Edinburgh, Edmonton, Gainesville, Gaza, Geneva, Glasgow, Gothenburg, Grahamstown, Guelph, Haifa, Halifax, Hamilton, Houston, Ireland, Iruna, Johannesburg, La Chaux-de-Fonds, Le Mans, Lille, Lillehammer, London (ON), Louisville, Lyon, Madrid, Malaga, Mallorca, Melbourne, Mexico City, Miami, Montréal, Nablus, Naples, Nazareth, Neuchatel, New York City, Ottawa, Oxford, Padova, Paris, Perth, Peterborough, Pisa, Port Elizabeth, Pretoria, Providence, Puebla, Regina, Roma, St Louis, Stellenbosch, Sudbury, Toronto. Utrecht. Valencia, Valladolid, Verona, Washington, Waterloo, Winnipeg, Yaffa, Zurich