risen and made travel to the garden difficult. On the twelfth day of their stay in the garden, Baháʼu'lláh and his family left the garden and started on their travel to Constantinople. It was Baháʼu'lláh who gave the garden the name of Ridván ("paradise") during his stay, and the name was thereafter applied to the twelve-day Festival of Ridván—known as the "King of Festivals"—celebrated annually by Baháʼís between 21 April and 2 May. Certain days of this festival are tied to major events that took place during the period of Baháʼu'lláh's stay in the garden: the first day celebrates his arrival in the garden; the ninth day, the arrival of his family; and the twelfth day, his caravan's departure towards Constantinople. These three days are major Baháʼí holy days, on which work must be suspended. See also Garden of Ridván, Akka Baháʼí gardens Notes and references Notes References Further reading Gardens in Iraq Baháʼu'lláh Ridvan 1840s establishments in the Ottoman Empire