A historic (left) and current (right) view of the east façade of the house. This is the part of the house first occupied by Bahá’u’lláh and his family—known as the House of ‘Údí K̲h̲ammár—with the room (at upper-left) where Bahá’u’lláh revealed the Kitáb-i-Aqdas, the Most Holy Book of the Bahá’í Faith.