Najíbíyyih Garden,

 Garden of Ridván, Baghdad

The arrival of Bahá’u’lláh in the Najíbíyyih Garden, subsequently designated by His followers the Garden of Riḍván, signalizes the commencement of what has come to be recognized as the holiest and most significant of all Bahá’í festivals, the festival commemorating the Declaration of His Mission to His companions. So momentous a Declaration may well be regarded both as the logical consummation of that revolutionizing process which was initiated by Himself upon His return from Sulaymáníyyih, and as a prelude to the final proclamation of that same Mission to the world and its rulers from Adrianople.

Shoghí Effendí, God Passes By, Chapter IX