The Golden Temple or Shri Hari Mandir Sahib has been built on a 67 feet square platform right in the middle of the sarovar. The temple is 40.5 feet square and has doors on the four directions i.e. east, west, north and south. An arch called Darshani Deori stands at the shore end of the causeway. The door frames of the arch are 10 feet in height and 8 feet in breadth.The door panes are decorated with artistic style. The main shrine can be entered through a causeway or bridge built over the holy tank. The arch also opens to the bridge. The length and width of the causeway are 202 feet and 21 feet respectively.
There is a 13 feet wide 'Pardakshna' or circular path round the main shrine which leads devotees straight to 'Har ki Paure' or steps of God. The causeway or bridge connects straight to this circular path. On the first floor of 'Har ki Paure', there is continous reading of Guru Granth Sahib. The main structure of Sri Harmandir Sahib, functionally as well as technically is a three-storied one. The front, which faces the bridge, is decorated with repeated cusped arches and the roof of the first floor is at the height of the 26 feet and 9 inches.At the top of the first floor 4 feet high parapet rises on all the sides which has also four 'Mamtees' on the four corners and exactly on the top of the central hall of the main sanctuary rises the third story. It is a small square room and have three gates. A regular recitation of Guru Granth Sahib is also held there. On the top of the room where Guru Granth Sahib is recited, stands a low fluted 'Gumbaz'(dome) having lotus petal motifs.
One of the best architectural specimen of the world, the architecture is a praiseworthy fusion of Hindu and Muslim styles. But the best thing about Golden Temple is that devotees cutting across religious lines come here to pay obeisance to the supreme Lord. The Golden Temple is a symbol of religious unity.