This plan established the timeline for closing the constructing, and planned for the renovation of the digital safety systems, elevators, and HVAC. Space between the ceilings of existing galleries and the building’s skylights would be renovated into two, 23 ft (7.zero m) excessive, hexagonal Tower Galleries. The galleries would have a combined 12,260 sq ft of house Picture of Arts and will be lit by skylights. NGA officials stated that the Tower Galleries would probably house modern art, and the creation of a distinct “Rothko Room” was attainable. The two buildings are related by a walkway beneath 4th street, referred to as “the Concourse” on the museum’s map.