Answer: If we look into the history of Lumbini, Nepal, it has outstanding Universal value. Lumbini is one of the holiest sites of one of the world's great religions and its remnants contain important evidence about the nature of Buddhist pilgrimage centers dating back to the third century BC.
The sacred area in Lumbini is one of the holiest and most significant places for one of the world's great religions as evidenced by the inscription on the Ashoka pillar.
From the third century BC to the fifteenth century AD, the archaeological remains of Buddhist viharas(monasteries) and stupas (memorial shrines) provide important evidence about the nature of Buddhist pilgrimage centers. Lumbini's integrity has been preserved by preserving the archaeological remains within the property boundary, which give the property its outstanding universal value. For visitors, Lumbini is a spiritual place and gives the strongest feeling of calmness. It's the holiest place to visit. In fact, it is one of the four sacred sites where lord buddha advised his followers. People, whether they are rich, poor, healthy, or sick, come all year long from all across the world to visit. His message to his disciples was strongly influenced by what he saw in this religion while growing up, and the encounters he had with followers here after his enlightenment also helped shape his and Lumbini legacy.