B. New York has 216 existing and under construction buildings over 492 feet , Chicago has 114, Miami has 32, Houston has 31, Los Angeles has 26, Dallas has 20, San Francisco has 21, Atlanta has 19, Boston has 19, Las Vegas has 16, Seattle has 15, Philadelphia has 15, Minneapolis has 11, Pittsburgh has 10, Jersey City has 9, Detroit has 8, Denver has 7.