Using an Intent to open Google Maps on the given location

To open Google Maps activity, you simply need to know latitude and longitude, pass these numbers to the URI parser:

Uri uri = Uri.parse("geo:37.386052,-122.083851");

Intent i = new Intent(Intent.ACTION_VIEW , uri);
startActivity(i);

It's quite simple to find latitude and longitude of a given location by using some free websites, e.g.: http://itouchmap.com/latlong.html