In 1985, professional expedition leader Mike Dunn organized a trip to take men he deemed the "greatest explorers" to the North Pole. The group included Armstrong, Edmund Hillary, Hillary's son Peter, Steve Fossett, and Patrick Morrow, and arrived on April 6, 1985. Armstrong said he was curious to see what the North Pole looked like from ground level, as he had only seen it from the Moon.
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Vladimir Putin has sought to increase Russian territorial claims in the Arctic and its military presence here. In August 2007, Russian expedition Arktika 2007, part of research related to the 2001 Russian territorial extension claim, planted a flag on the seabed below the North Pole. Both Russian submarines and troops deployed in the Arctic have been increasing.
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In 1926, Roald Amundsen was the first expedition leader for the air expedition to the North Pole, making him the first person, without dispute, to reach both poles.
Source: Wikipedia