Did you know… The painting of the constellations on the ceiling of the cathedral-like Main Concourse in Grand Central Terminal is backwards. No one knows for sure how the mix-up occurred, but the Vanderbilt family claimed that it was no accident; the zodiac was intended to be viewed from a divine perspective, rather than a human one. For this challenge, teams had to take a picture of themselves looking confused by this fact in the Main Concourse.