As noted by DPReview, Archie Tinkerbell writes for FreeYork:
Sometimes photographers amaze us with their art, the ability to uniquely reflect the world around us and get a look at it from a different angle. And sometimes doing something completely disgusting or normal so that it is impossible to understand why the work is recognised as a masterpiece. Anyway, these photos were sold for millions of dollars.
Quite a variety of photos, both in terms of subject matter and time period. Andreas Gursky has three of the top ten!