The most northern 'line' of latitude is really a point. 90 degrees latitude north is the north pole.
http://en.wikipedia.org/wiki/Ras_ben_Sakka
The most northern point of the earth called is called the Arctic. This is commonly referred to as the North Pole where Santa is believed to live.
Germany is a rather large place. The northern most point of Germany is at Latitude 54.908199, Longitude 8.651733. The southern most point is at Latitude 47.275502, Longitude 10.184326. The western most point is Latitude 51.053481, longitude 5.869446. The eastern most is Latitude 51.272226, Longitude 15.04097.
The northernmot point on the earth is the North Pole. It may not be on land, but it is "on the earth."
Alaska is the northernmost state of the U. S. Its northernmost point is along 71° 2' to 71° 5' north latitude.
The northernmost latitude is 90 degrees north. Only one point is there ... the north pole.
Cape Nordkinn is Norway's most northern point.
The most northern point is the North Pole.
The most northerly point in Western Australia is Cape Londonderry (Latitude 13° 44' 36"; Longitude 126° 47' 43").
The most northern place on earth is the North Pole, at 90° North latitude. Every direction from there is south.
The line of Latitude that is 66.33 degrees North of the Equator. It is the point at which the sun does not set at Midsummer or rise above the horizon at Midwinter.The Arctic Circle is the parallel of latitude at 66º 33' north of the Equator.This is the most northerly point at which the Sun is visible during the northern winter solstice, and the most southerly point at which the sun can be seen at midnight on the northern summer solstice