A Bahá'í pilgrimage currently consists of visiting the holy places in Haifa, Akká, and Bahjí at the Bahá'í World Centre in Northwest Israel. Bahá'ís do not have access to other places designated as sites for pilgrimage.
Bahá'u'lláh decreed pilgrimage in the Kitáb-i-Aqdas to two places: the House of Bahá'u'lláh in Baghdad, and the House of the Báb in Shiraz. In two separate tablets, known as Suriy-i-Hajj, he prescribed specific rites for each of these pilgrimages. It is obligatory to make the pilgrimage, "if one can afford it and is able to do so, and if no obstacle stands in one's way". Bahá'ís are free to choose between the two houses, as either has been deemed sufficient. Later, `Abdu'l-Bahá designated the Shrine of Bahá'u'lláh at Bahjí (the Qiblih) as a site of pilgrimage. No rites have been prescribed for this.
The designated sites for pilgrimage are not accessible to the majority of Bahá'ís, as they are in Iraq and Iran respectively, and thus when Bahá'ís currently refer to pilgrimage, it refers to a nine-day pilgrimage that occurs at the Bahá'í World Centre in Haifa and Akká in Israel. This nine-day pilgrimage does not replace pilgrimage to the designated sites for pilgrimage, and it is intended that pilgrimage to the House of the Báb and the House of Bahá'u'lláh will occur in the future.
The House of Bahá'u'lláh in Baghdad, also known as the "Most Great House" (Bayt-i-A'zam) and the "House of God," is where Bahá'u'lláh lived from 1853 to 1863 (except for two years when he left to the mountains of Kurdistan, northeast of Baghdad, near the city of Sulaymaniyah). It was located in the Kadhimiya district of Baghdad, near the western bank of the Tigris river. It is designated in the Kitáb-i-Aqdas as a place of pilgrimage and is considered a holy place by Bahá'ís.