History of skyscrapers in New York

There are many interesting Internet sites on SKYSCRAPERS in New York and elsewhere. You might find worth visiting the following ones:
http://www.bc.edu/bc_org/avp/cas/fnart/fa267/20_sky1b.html

http://inventors.about.com/library/inventors/blskyscapers.htm

And also a video worth watching:

Some vocabulary to help you understand the video:

cast iron: la fonte a magnet: un aimant One of the ways to figure out: un des moyens de savoir skyline: line of horizon remember: se rappeler keep going: continue

Synonyms of skyscraper: tall buildings, high-rise,

Some of the most famous skyscrapers in NYC: the Woolworht Building, the Empire State Building, the Twin Towers of the World Trade Center,

Enjoy!