**6. Conclusion**

Vajrayana Buddhism philosophised the yantra mandala style of vihara of Paharapur in this paper, and structurally Votive Stupas, notably, Shallbanvihar, Ashrafpur, Saranath, and Bodhgaya phenomenally characterised the superstructure of this vihara. The discovered Votive stupa belongs to the Vajrayana Buddhism. The **Figures 19**–**26** are the logical interpretation of the Vajrayana style. Meanwhile, a question has been raised inquiring into the real necessity to regenerate these structures virtually. The answer is: yes, it is vital for a better understanding of accuracy and preservation capability. A case in point is the predictive 3D modelling of Paharpur Vihara has been generated on the idea of Yantra Mandala and the central shrine predicted on the notion of Vajrayana. Heritage sites are continuously exposed to threats such as weathering erosion and anthropogenic erosion, and especially, the problematic safeguarding mechanism [15]. Therefore, it is necessary to conserve the Paharpur Vihara or *Somapura Mahavihara* digitally and visualised by using VR.

*Predictive 3D Modelling and Virtual Reality of the World Cultural Heritage of Ruins… DOI: http://dx.doi.org/10.5772/intechopen.98928*
