Washington museum is a masterpiece in design collaboration
As passersby walk the streets D.C., they will see a building that appears to be five levels above ground.
However, nearly 60% of the museum is situated below grade to a depth of 65 feet, placing it well below the water table of the nearby Potomac River.
This requires perimeter walls that are six and a half feet thick to hold back the soil and water pressure.
It is in this hole that all of the main mechanical systems are housed that serves the museum.