I transited at Antwerpen-Centraal train station on my way from Amsterdam to Ghent in January. I’d read that it was considered the most beautiful train station in the world, as awarded by Mashable in 2014. Naturally, I was curious and was gobsmacked at its beauty. Unfortunately, I didn’t leave the station to photograph the exterior, but I did walk around a bit and took a few pics.
Wikipedia, Antwerpen-Centraal railway station, accessed April 2, 2018