In the world there are spiritual spaces built in many different shapes. Basically, two shapes are dominant.
2 conical or pyramid with spires pointing heavenwards.
These forms recurr in temples, churchs, gurudwaras, masjids and pagodas all around the world.
Usually, to increase the energy storage capacity of the place, there will be a series of domes arranged one above the other. This is referred to as ‘Vertical multiplication’.
At other places the dome or pyramidal structure like spire maybe repeated along the horizontal plane, this is ‘Horizontal multiplication’.
In many locations, a combination of both is seen. The basic shape is repeatedly projected through the earlier layer to form a SHIKHAR.