Windows 10 provides a list of detailed country maps (using Bing Maps) that can be downloaded and used for directions/navigation when travelling or just for information.
To do this :
Access Windows Settings (Action Center > All settings). Next, choose System.
Click on Offline Maps and select Download maps.
This will display a list of regions for which maps can be downloaded.
Some of the country maps are large in size, so choose accordingly especially when on metered connections.
The selected maps can then be downloaded for offline use. These will show up in the list.
The Windows 10 default Maps app (launch it from the Start menu or search for it) can be used to view these maps.
Since these maps have already been downloaded, navigating through them and using them will be a lot more quicker than through Internet.