While the Île-de-France region as a whole maintains numerous international cooperation agreements (such as with the Community of Madrid, the Beijing Municipality, and the Seoul Metropolitan Government), its capital, Paris, holds a unique twinning philosophy.
* **Rome, Italy:** Since 1956, Paris is exclusively and permanently twinned with Rome. The official motto states: *"Seule Paris est digne de Rome; seule Rome est digne de Paris"* (Only Paris is worthy of Rome; only Rome is worthy of Paris). * **Partner Cities:** Aside from its twin city, Paris and the Île-de-France region maintain active "pacts of friendship and cooperation" with dozens of major global cities, including London, New York, Tokyo, Berlin, and Buenos Aires.
