Okay. Unhelpful commentary may follow. Are you sure you can't zoom on your phone? I've just tried on mine and there were no issues zooming. Zooming is not necessary (I have a 5" screen, opinions may vary). Look at what's on the page. See if you can get an idea of how those shapes compare to wha...
It is the exact location that those coordinates take you to. Go to Google Maps, type in the coordinates. It will show you a historic building on the map, perfectly square from above. Enter its name into http://journal29.com/3/ - three words, and it's the specific building that the coordinates point...