Turn-by-turn navigation in a completely foreign place can be invaluable, and save much frustration. I personally use Organic Maps (MAPS.ME), and I'm fortunate that it never led me astray or on horrible roads etc.
My family and I were on a “star safari” last night, and our guides gave us a Google Maps location for a parking lot on a volcano. Google struggled, as did Here. Organic Maps? No problem! So thank you; you’ve set me up with my new offline map!
