It was signed on Pheasant Island, a river island on the border between the two countries which has remained a French-Spanish condominium since the treaty.
Perjanjian ini ditandatangani di Pulau Faisans, suatu pulau sungai di perbatasan antara kedua negara yang tetap menjadi kondominium Prancis-Spanyol sejak perjanjian ini.