.

Lilliane and Hassan's answers are clearly the correct translation, but I didn't find the actual organization itself in online searches, so you might need to use any more context you have to determine which organization the translation is referring to. It's also likely that the word "organization" is not part of its name in English.

It could possibly be referring to the "Global Towns Network" or "Sister Cities International".

http://www.world-towns.net/

http://www.sister-cities.org/