Join Us for #SisterCitySunday


We’re excited to announce that the Delegation of the European Union to the United States and Sister Cities International are teaming up to highlight the importance of people-to-people relationships in global peace-building with #SisterCitySunday, an online campaign starting on October 2, 2016.

Each Sunday for 28 weeks, we will share dynamic content from each EU member state, featuring a story about business, cultural, humanitarian, municipal, or educational partnerships between a U.S. and EU sister city.
There are over 600 EU-U.S. partnerships in the Sister Cities International network with some of the most robust and historic sister city programming to date. From Portugal to Finland, stories will illustrate the great impact of subnational diplomacy and exchange between communities to create and sustain peaceful international relations.
How does it work?
Check each Sunday from October 2, 2016 to May 7, 2017 for new stories. Stories will also be shared on Twitter, Facebook, and Instagram using #SisterCitySunday.
To join the conversation on social media, make sure to use #SisterCitySunday and tag @EUintheUS and @SisterCitiesInt on Twitter and Instagram, and EUintheUS and SisterCitiesInternational on Facebook. Let us know about your experiences in twinned cities and share your partnership stories with us!

Take Action

This year marks a pivotal moment during which Sister Cities International is celebrating 60 years of peace through people. Get involved in this momentous year.
More Information


As the world becomes smaller, and connections online become more frequent than face-to-face interactions, multicultural understanding at the community level is more important than ever. Sister Cities International enables citizen diplomats in communities across the world to develop relationships with communities in other countries that are based on cultural understanding and mutual cooperation.Donate