Past Events
Sister Cities International 70th Anniversary Homecoming
1956 – 2026 Sister Cities International 70th Anniversary Homecoming July 22 – 25, 2026 Washington,.
- July 22-25, 2026
- The Ritz-Carlton, 1150 22nd Street, N.W. Washington, DC, 20037, US
Sister Cities International 70th Anniversary Homecoming SCIlent Auction
The SCIlent Auction is now LIVE! The SCIlent Auction closes on July 24th at 8:15pm ET. Happy bidding!
- July 10-31, 2026
2026 Spring Leadership Meetings – San Jose, California
2026 Spring Leadership Meetings – San Jose, California Join Sister Cities International for the 2026.
- Jun 23, 2026 - Jul 08, 2026
- Signia by Hilton, 170 S Market St,, San Jose, CA, 95113, US
Kenya Roundtable
Join us for our Kenya Member Roundtable on May 28, happening online
- May 28, 2026
- 02:00 PM ET
- Online
Germany Roundtable
Join us for our Germany Member Roundtable on May 5, happening online
- May 05, 2026
- 01:00 PM ET
- Online
Turkiye Roundtable
Join us for our Türkiye Member Roundtable on April 28, happening online
- April 28, 2026
- 11:00 AM ET
- Online
United Kingdom Roundtable
Join us for our United Kingdom Member Roundtable on April 22, happening online
- April 22, 2026
- 11:00 AM ET
- Online
Palestine Roundtable
Join us for our Palestine Member Roundtable on April 17, happening online
- April 17, 2026
- 12:00 PM ET
- Online
Italy Roundtable
Join us for our Italy Member Roundtable on April 7, happening online
- April 07, 2026
- 01:00 PM ET
- Online
Poland Roundtable
Join us for an engaging virtual roundtable focused on strengthening connections
- April 02, 2026
- 12:00 PM ET
- Online
2025 Fall Leadership Meetings – Tempe
2025 Fall Leadership Meetings – Tempe Join Sister Cities International for the Fall Leadership Meetings.
- October 08-11, 2025
- Tempe, Arizona
2025 SCI US-Japan Sister Cities Summit
US – Japan Summit Summary The 2025 U.S.-Japan Sister Cities Summit (September 16-19, 2025) is.
- September 16-19, 2025
- Izumisano City, Japan
2025 Summer Leadership Meeting
SCI 2025 Summer Leadership Meetings and SCI Annual Business Meeting Plan to join Sister Cities.
- July 20-23, 2025
SCI All Americas Summit
2024 SCI All Americas Summit San Antonio, TX, USA About SCI All Americas Summit Sister.
- May 23-28, 2024
- 01:00 AM ET
SCI Africa Summit
2023 SCI Africa Summit Cape Town, South Africa The 2023 Sister Cities International Africa Summit,.
- February 20-24, 2023
- 02:00 PM ET