15 of Our Favorite Photos from 2015

This has been a fun- and fact-filled year for the Photo of the Day category here on MNN. As 2015 wraps up, we wanted to take a look back at the images that you liked the most, starting with something beautiful and toasty: these turf houses in Iceland. Our readers have impeccable taste and a thirst for knowledge. The popularity of these images can attest to that!

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