It's unusual around noontime to see the Brookings Quadrangle so empty as in the picture of the day.
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kamoranakrre points out that it's not entirely empty. There's one person in the picture. If you're feeling in the mood for a Where's Waldoesque game, see if you can spot the lone walker. (It's pretty easy in the full-size image, but more of a challenge when said person is only a handful of pixels tall.)
By the way, Ridgley Hall is that one in the background with all the arches. At the left of the frame is January Hall.