Grand Central Terminal is more than just a transportation hub; it's a magnificent architectural masterpiece and a beloved New York City landmark. Stepping into the Main Concourse is an awe-inspiring experience, with its soaring ceilings adorned with constellations and the iconic Tiffany Clock presiding over the bustling scene. But beyond the epic-ness, Grand Central Terminal hides interesting secrets. Look closely at the ceiling near Cancer the crab, and you'll find a small, dark uncleaned brick. For the athletic, there's a hidden tennis court on the fourth floor, a luxurious perk for those seeking a unique urban sporting experience. And for the adventurous, try to spot the hidden walkways within the giant windows – a glimpse into the inner workings of this huge structure.