Note the map at right (Wikipedia): https://en.wikipedia.org/wiki/North_Pole https://en.wikipedia.org/wiki/North_Pole - while the South Pole is on the Antarctic

Note the map at right (Wikipedia): https://en.wikipedia.org/wiki/North_Pole https://en.wikipedia.org/wiki/North_Pole - while the South Pole is on the Antarctic continent, it's all floating ice up north, even though it's usually several meters thick. While historically the arctic polar expeditions used sleds, nowadays people mostly sail there - either in submarines, or on icebreakers. (Apparently Russians tend to float a temporary station nearby, but no permanent bases - as the ice is always moving: https://en.wikipedia.org/wiki/Barneo https://en.wikipedia.org/wiki/Barneo )