Union Station Vaulted Glass Ceiling Washington DC United States // WASHINGTON, District of Columbia — Natural light filters through the vaulted glass ceiling of Union Station, illuminating the classical statues that line the upper walls of the concourse. Designed by architect Daniel Burnham and opened in 1907, the terminal exemplifies the Beaux-Arts architectural style. The massive barrel-vaulted structure draws direct inspiration from the classical Roman Baths of Diocletian, utilizing an extensive grid of skylights to maximize daytime illumination for early 20th-century rail travelers.

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