events space. The space was initially a women's lounge, and later became an Amtrak warehouse. It then suffered years of neglect and water damage, and was eventually closed off. In November 2016, the room was renovated and reopened. An architecture firm removed wooden decking that divided the space into two floors, and took out a drop ceiling that defaced the original ornate ceiling. The work restored the room's columns and chandeliers, including creating several replica chandeliers. The room also has four French block murals of landscape scenery; three of the four were cleaned and preserved, while the fourth was reproduced. An original mirror and banister were added to the room's north end. The space was improved for events with color-changing lights and an audiovisual system. In 2016, Amtrak held a competition for renovations and development of Union Station. The winner, Riverside Investment & Development Co., proposed multiple changes, including new retail, a food hall, and two 12-story towers. The plans followed an unrealized 2007 plan for a tower addition above Union Station. From 2018 to 2019, a $22 million restoration of the Great Hall, including restoring original detailing and rebuilding the large skylight, was completed, increasing natural light by 50 to 60 percent. The skylight, originally built in the 1920s, suffered from decades of harsh weather, leading to countless patchwork repairs, many of which blocked light from entering the Great Hall. The 2018–19 renovation restored the historic skylight to its original appearance, and added another glass skylight atop it. The new skylight is better-designed to prevent water and snow damage, and increases light entering the Great Hall. In 2018, Riverside Investment & Development Co. released a revised plan that included a seven-story addition above Union Station, adding 404 apartments to the building. The planned design was created by Solomon Cordwell Buenz, resembling Burnham's earlier proposed tower above the station, designed to handle the weight. The addition was to be clad in glass and light bronze, differentiated from the station's design as recommended in its landmark designation. The developers also planned to renovate the existing upper levels of Union Station's headhouse, adding 330 hotel rooms. The proposal was met with mixed reactions by preservationists and architectural critics, with Blair Kamin, the Chicago Tribunes critic, calling it "banal" and "top-heavy". Several months later, the developers announced they were cancelling the plan for the seven-story addition, instead constructing only a single additional penthouse