Washington, D.C.,'s Union Station is one of the nation's busiest transportation hubs and the second busiest Amtrak station, hosting 100,000 passenger trips a day. It opened in 1907 and is now operating beyond its capacity and fails to comply with federal safety and Americans with Disabilities Act requirements. (Photo: Amtrak)
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Union Station's Proposed Transformation

Amtrak wants to modernize the Washington, D.C., station to make it a hub for high-speed rail.