You may know that https://photo.stackexchange.com/ (this site's parent :) has a "Photo of the week" contest.
Here are all the images featured on the homepage from the beginning of 2016 in reverse chronological order. Historical archives for previous years, see the archives list at the end
Hall of Fame
18 July 2016 - ʇolɐǝz ǝɥʇ qoq