<p>This Architectural Drawing is AutoCAd 2d Drawing of Bathtub plan blocks in AutoCAD, dwg file. The Bathtub refers to <strong>the underground foundation area at the site of the World Trade Center and accompanying buildings in New York City</strong>. The term bathtub is something of a misnomer, as the area does not hold any water; rather the purpose of its design is to keep water out.</p>