Union Station in Chicago, IL took 10 years to construct before it finally opened in 1925. The station is best known for the Great Hall. The hall has an eye-catching skylight with a barrel-vaulted design. The train station is decorated with timeless chandeliers that feature birds, bees, butterflies, and flowers. Inside the station you’ll find long oak benches, shops, restaurants, and private event spaces. This station is not just beautiful, it’s also one of the busiest in the country!