Research on ancient monuments and mind blowing findings:

https://www.youtube.com/watch?v=F-nNTGK0wFw

https://www.youtube.com/watch?v=Ft1waA3p2_w

https://www.youtube.com/watch?v=Rqyby56IHus

Technological advancements in AR, VR and MR:

https://www.youtube.com/watch?v=uIHPPtPBgHk

https://www.youtube.com/watch?v=E0QLVj9FJ0A