BUILDING
Capitalize only in a proper name, no quotation marks:
Empire State Building
Plaza Center
but Plaza building
National Geographic buildings are handled as follows:
Hubbard Memorial Hall
16th Street Building
Melville Bell Grosvenor Building (official name for the 17th Street Building), headquarters building
M Street Building
Gilbert H. Grosvenor Auditorium
When comparing heights to number of stories or floors in a typical building, use an average of 10 feet per story/floor:
A 600-foot drop is equivalent to a 60-story building