By square footage, Building 10 (Clinical Center) at the National Institutes of Health Campus, Bethesda, MD
yes they are
burj dubail with over 600M
DFW (Dallas / Fort Worth International) is on land that is the same size as Manhattan Island. It most likely has the most building mass as well.
{| |- | Governments obtain their money from the people. This is usual gotten through taxes. And it was the tax issue that got the colonists upset to begin with. Governments can also sell assets such...
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