Simplify the following text for a Grade 6 native English-speaking person.
Original: One Liberty Plaza , formerly the U.S. Steel Building , is a skyscraper in lower Manhattan , New York City , at the location of the former Singer Building ( in 1968 , the third tallest structure ever demolished ) . 1 Liberty Plaza is currently owned and operated by Brookfield Properties .
Simplified: One Liberty Plaza is a skyscraper in New York City , United States .