Through their official city-to-city relationships, these volunteer associations promote people-to-people diplomacy and encourage citizens to develop mutual trust and understanding through commercial, cultural, educational, and humanitarian exchanges.
The Protocol Alliance also advises on the formation of new sister city relationships and provides information on the program to interested groups and individuals.
Houston's sister cities (and year relationship established) are listed below. NOTE: All links go to www.sistercitiesofhouston.org website, which is not administered by www.houstontx.gov.