The Great Hall at Union Station is an iconic landmark in the heart of Seattle's Pioneer Square. The ethereal beauty of the 11,000 square-foot ballroom was built in1910 and is complemented by 460 twinkling lights overhead its majestic barrel-vaulted ceiling. The black and white tiled floors and champagne, gold and emerald color scheme make this regal venue a timeless setting and the perfect location for a classic and elegant event..