Those were some very specific and insightful guesses–you guys nailed it this week!
Answer: Yes… I know that the hint was cheesy. This is an infrared image of the reflective roof tiles on the Alder Planetarium in Chicago, Illinois. You can easily see that the afternoon sun is reflecting off of the right side and the sky is reflecting off of the other side.
Also, thank you for the travel tips Mike, we’d love to “catch a game at Wrigley and a Chicago style pizza at Bricks“–that sounds like a great way to experience Chicago!