Linked from
The 9 pages that link to North Pole, each with the reason it gives.
Polar nightBroader topic: The Sun stays below its horizon for roughly half the year.
ArcticBroader topic: The pole is the Arctic's geographic center, but not the whole region.
Richard E. ByrdRelated: Whether Byrd reached this point in 1926 remains contested.
Robert PearyNarrower topic: The geographic destination at the center of Peary’s claim.
Frederick CookBroader topic: Cook claimed to have reached this geographic point in April 1908.