what's the historical importance of the second structure?
UNANSWERABLE
how many floors is the empire state building observation deck 3 floors. where is it located? Midtown Manhattan in New York City. what is the earlier mentioned building used for? UNANSWERABLE what kind of architecture does it follow? Pre–World War II architecture. did the design have any kind of change? Yes, it was later increased to 60 and then 80 stories. the place where you mentioned it is located, what is it's economics? It, along with Lower Manhattan, is one of the world's leading financial centers. does it have any kind of headquarters? Midtown contains the headquarters of major companies, including 4Kids Entertainment (formerly), Barnes & Noble, Bloomberg L.P. to name a few. the kind of architecture mentioned, does any other structure have the same? Yes, the Willis Tower's and the John Hancock Center's.
On November 11, 1981, Veterans Day, high-rise firefighting and rescue advocate Dan Goodwin, for the purpose of calling attention to the inability to rescue people trapped in the upper floors of skyscrapers, successfully climbed the building's exterior wall. On November 11, 1981, Veterans Day, high-rise firefighting and rescue advocate Dan Goodwin, for the purpose of calling attention to the inability to rescue people trapped in the upper floors of skyscrapers, successfully climbed the building's exterior wall. The project, which would become the world's second tallest building at opening, was conceived and owned by Jerry Wolman in late 1964
John Hancock Center John Hancock Center John Hancock Center
History History History
On November 11, 1981, Veterans Day, high-rise firefighting and rescue advocate Dan Goodwin, for the purpose of calling attention to the inability to rescue people trapped in the upper floors of skyscrapers, successfully climbed the building's exterior wall.  On November 11, 1981, Veterans Day, high-rise firefighting and rescue advocate Dan Goodwin, for the purpose of calling attention to the inability to rescue people trapped in the upper floors of skyscrapers, successfully climbed the building's exterior wall. The project, which would become the world's second tallest building at opening, was conceived and owned by Jerry Wolman in late 1964. 
wiki:7743580
Empire State Building [SEP] Exterior
The Empire State Building's art deco design is typical of pre–World War II architecture in New York. The modernistic, stainless steel canopies of the entrances on 33rd and 34th Streets lead to two-story-high corridors around the elevator core, crossed by stainless steel and glass-enclosed bridges at the second-floor level. The riveted steel frame of the building was originally designed to handle all of the building's gravitational stresses and wind loads. The exterior of the building is clad in Indiana limestone panels sourced from the Empire Mill in Sanders, Indiana, which give the building its signature blonde color. The amount of material used in the building's construction resulted in a very stiff structure when compared to other skyscrapers, with a structural stiffness of versus the Willis Tower's and the John Hancock Center's .