The Haʻiku
Stairs, also known as the Stairway
to Heaven or Haʻikū
Ladder, is a steep hiking
trail on the island of Oʻahu, Hawaii. The total 3,922 steps span along Oahu's Ko'olau mountain range. Beginning
in 1942, contractors for the United
States Navy began construction of
the Haʻikū Radio Station, a top secret facility that was to be used to transmit
radio signals to the Navy ships that were then operating throughout the
Pacific. Source