Augmented reality (AR) is a term for a live direct or indirect view of a physical real-world environment whose elements are merged with (or augmented by) virtual computer-generated imagery - creating a mixed reality. - Wikipedia
I'm currently reading Maximum City: Bombay Lost and Found by Suketu Mehta in anticipation of my trip to Mumabi in a couple weeks. Whether a longer work like Maximum City or Michner's Poland, or just a travel guidebook or hotel description on TripAdvisor, I always read about the places to which I travel prior to going there.*
Why? Because, of course, it "augments" reality.
Knowing the stories of a place give visiting it meaning. A temple, a fortress, or a house is just building materials unless one thinks about the people that have worshipped, fought or lived there.**
Reader/travellers have always known that reality is better augmented with information. Even before iPods.
* I believe this trait may be hereditary. I sent grandson Paul a kid's guide to DisneyWorld a couple months before we visited. He had the facts about every attraction memorized before stepping foot inside the parks.
** The opposite holds true as well - visiting a place can augment reading. On leaving a tour of the Anne Frank house in Amsterdam, my then teenage son turned to me and said, "I didn't realize Anne Frank was a real person." I'll bet he's not the only student who's had that misconception.
The 2007 version of augmented reality.