1956 - 2026
Sister Cities International
70th Anniversary Homecoming
July 22 – 25, 2026
Washington, D.C.
Our Purpose
To celebrate seven decades of citizen diplomacy and inspire a new era of global connection through storytelling, partnerships, and dynamic engagement. The 70th Anniversary marks both a homecoming and a launchpad— honoring the past while shaping the future of international
friendship.
Our Vision
Reignite global participation in the Sister Cities movement by showcasing the power of people-to-people relationships that have advanced peace, prosperity, and cultural understanding since 1956.
Event Highlights
2026 SCI Annual Awards
2026 SCI Annual Business Meeting
Citizen Diplomacy Educational Plenary Sessions
Embassy Visits (Thailand, Japan, & more)
SCI Outgoing & Incoming Board Meetings
