My gmap3d.img is in the .System folder on my 3750. BTW the US 3750 does not support 3D building either, but it does with the CHN firmware.
Obvious note: to see 3D building you have to be zoomed closed enough and you must in an area where there is a 3D building...
Obvious note2: I use the US gmap3d.img. This means I cannot see any building in Europe...
LOL! No need to drive or simulate. Just click the map with finger and scroll the map until you are there... Then, zoom in.
Click in Where-To, POI, Attractions (or something relevant) and find the CN Tower in Toronto (for example). Selecting this POI will put it on the map.