Bahá'í House of Worship
The Bahá'í House of Worship was first mentioned in Baháʼu'lláh's book of laws, the Kitáb-i-Aqdas, as the Mas͟hriqu'l-Ad͟hkár ( "Dawning-place of the remembrance of God"), and the details of the institution were then elaborated by both Baháʼu'lláh and his successor, ʻAbdu'l-Bahá.