https://en.wikipedia.org/wiki/Pilgrimage
Bahá'u'lláh decreed pilgrimage to two places in the Kitáb-i-Aqdas: the House of Bahá'u'lláh in Baghdad, Iraq, and the House of the Báb in Shiraz, Iran.Later, ʻAbdu'l-Bahá designated the Shrine of Bahá'u'lláh at Bahji, Israel as a site of pilgrimage. The designated sites for pilgrimage are currently not accessible to the majority of Bahá'ís, as they are in Iraq and Iran respectively ...