Where should we start when describing this Art Deco gem in Kansas City? Maybe with the ceilings. The soaring, cathredrallike works of art draw your eyes upward the moment you step inside, and you can't help but spend a few moments getting lost in their architectural details and the romance that accompanied train travel through this bustling terminal generations ago. But once you find yourself back in the present day, you'll find several pleasant ways to spend your time. We timed our visit to check out the traveling exhibit "Diana, A Celebration," shortly after the royal wedding of Diana's son William. And while we enjoyed that exhibition a great deal, we found ourselves spending more time at the science center, where our 5-year-old could have spent a day without asking once what time it was. He clambered down a slide designed to look like a sewer pipe in an area created to offer lessons about KC's public works department. He spent nearly an hour playing mini golf in a specialized course that blasts foam golf balls through the air when they enter vacuum tunnels. He watched snakes get fed their lunch (dead mice), dug for dinosaur bones in a sand pit, learned about tornadoes in a weather exhibit and pretended he was in kindergarten by visiting a hands-on classroom. We noticed that groups of women who came to see "Diana" dined at Pierpont's, the upscale steak and seafood house and indulged in treats at the Rocky Mountain Chocolate Factory, where we also tried a decadent frozen banana and some thick-coated chocolate-covered graham crackers. Overall, we were at Union Station for more than three hours and never even made it to the planetarium, and we would definitely return (even without the 5-year-old).