Smithsonian magazine recently released the finalists of its 15th Annual Photo Contest, and each and every one is absolutely stunning. Among the 48,000 submissions from photographers across 155 countries and locations around the world, 60 stand-out images made it to the last round of selections. Participants were categorized into six photo categories: Natural World, The American Experience, Travel, People, Altered Images, and Mobile.
You can vote now through March 26 for the Readers' Choice winner every 24 hours, but be forewarned — it'll be extremely difficult to narrow your choice down to one beautifully raw and visually spectacular photograph. Winners of each category as well as the grand prize will be announced on Tuesday, March 27. See 15 of our favorites ahead and check out Smithsonian.com to see all 60 finalists you can vote from!