Union Station was completed in 1907 but had fallen into disrepair by the 1970s. To restore the station, in 1981 Congress created the Union Station Redevelopment Corporation, which is now coordinating myriad changes, both inside and out, many of which have been in the works for years. Some — such as a redesigned Columbus Circle outside the station’s entrance — are already underway, while others are still in the planning stages. Most of the initiatives share a common purpose: to expand the capacity of the station and enhance the experience of those who travel through it. With train travel enjoying a renaissance and the District’s population is rapidly growing, increasing traffic through the station. Here's a look at what to expect.