The World Trade Centre complex that was in New York City's downtown financial district until 2001 was made up of how many buildings when the last was built in 1985?
7 North Tower (1), South Tower (2), the Marriott World Trade Center (a hotel, 3); 4 World Trade Center; 5 World Trade Center; 6 World Trade Center (which housed the United States Customs and the US Commodities Exchange) and 7 World Trade Center.
What entertainment venue in New York City's Rockefeller Center, nicknamed "the Showplace of the Nation", opened to the public in December 1932?
