Haiku StairsMajicphotos/Getty ImagesThe Haiku Stairs in Oahu, Hawaii, have long attracted tourists who hike them illegally.Officials decided to remove the landmark, popularized by social media, due to over-tourism concerns.Five people were arrested last week as visitors flock to see the stairs before they're gone.At least five people have been arrested, and dozens more issued warnings as tourists flock to a World War II-era landmark in Hawaii that is being destroyed due to over-tourism.The Haiku Stairs, also known as the Stairway to Heaven, climb nearly 4,000 steps along a ridge in the Koʻolau mountains on the island of Oahu.