Many ancient sites have been destroyed by acts of humans and nature. For example, in recent times, the Bamian Bhuddha statues have been ravaged by the Taliban and now they are gone forever. Future generations won’t be able to experience the magnificent statues carved into the mountains more than 2000 years ago. The ancient sites that are gone are gone now, and nothing can be done about that, but there are many ancient sites that have still survived but they may not survive in future. The augmented reality technology can be used to preserve the sites, if not physically, then at least digitally.
Augmented reality technology, as you may know, makes you feel as if you are actually at some other place. For example, sitting in your drawing room, you can wander around in a tropical forest in all its glory, as if you are there. Wearing a VR headset you can visit the Sistine Chapel, the Hanging Gardens of Babylon, the pyramids, and even volcanoes and distant planets for that matter.
Coming back to archaeological sites, many of these sites are constantly getting damaged by the inflow of tourists from all over the world if not by religious fanatics all the time. With augmented reality, you will be able to visit the archaeological sites without visiting the place and without damaging it.
Professor of Architecture Giorgio Verdiani has published a paper (source) on how augmented reality technology can be used to let people enjoy the frescoed caves of Cappadocia (an ancient heritage site in Turkey) from within their drawing rooms, or at least by visiting the neighbourhood museum.
According to the paper, a laser scanner can be used to map the walls of the early Christian cave churches, measuring the dimensions of the caves with their exact locations and capturing the texture of every nook and corner. Then this data will be used to generate the exact 3-D model digitally. This candidate can also be used to 3-D print the exact replica inside a museum where people can visit and see the frescoes in the entire beauty.
Right now this is just an idea but it is better to use augmented reality to recreate and preserve the beauty of the ancient archaeological sites than playing Pokémon GO.