The Whitsunday Islands are a collection of 74 islands of various sizes off the central coast of Queensland, approximately 900 km north of Brisbane. The island group is centered around Whitsunday Island, while the group’s commercial center is Hamilton Island. The Whitsundays are a popular tourist destination for travelers to Queensland and the Great Barrier Reef; the area is one of the most popular yachting destinations in the Southern Hemisphere. Seven-kilometer-long Whitehaven Beach, along Whitsunday Island’s eastern shore, is renowned for its crystal white silica sands and turquoise-colored waters. Image courtesy of NASA.