San Francisco has Sister City relationships with 18 partner cities. A Sister City relationship is a broad-based, officially approved, long-term partnership between two communities in two countries. A Sister City relationship becomes official with a signing ceremony of the top-elected officials of the two local jurisdictions. Sister City partnerships have the potential to carry out the widest possible diversity of activities of any international program, including every type of municipal, business, professional, educational and cultural exchange or project. Is 18 a lot of Sister Cities to have? Maybe so, but I see Seattle boasts 21 sister cities.
Here are just emblems from the International Terminal at San Francisco airport for Cork, Ireland and for Paris, France.