Maya Devi Temple is the heart of all monuments at this holy site. The temple complex bears testimony of several phases of construction over the centuries. It was fully restored and reopened in 2003 during the celebration of the 2,547th auspicious birth anniversary of Lord Buddha. Inside the temple, there are remains of structures of the early Maya Devi Temple that dates back from the 3rd century B.C. to 7th century A.D. The upper floor remains open for meditation.

The sculpture at Maya Devi Temple depicts Queen Maya Devi grasping a tree branch with her right hand while giving birth to Siddhartha Gautama, supported by Queen  and sister Prajapati Gautami, at the time of delivery. To the far right is the figure of Brahma and Indra, wearing conical crowns, standing in devotion before the queen to receive the divine child, as narrated by Buddhist literature. At the bottom of the panes is the newly born Prince Siddhartha Gautam with a halo around his head standing upright on a lotus pedestal with two celestial figures receiving him.