where is the monument located?
On the National Mall in Washington, D.C.
Washington Monument
The Washington Monument is an obelisk on the National Mall in Washington, D.C
who was president when the washington monument was built UNANSWERABLE when was it built? Construction began in 1848. when did it get completed? 1888 who built it? Robert Mills was the architect. did he also design it? Yes, the society held a competition for designs, and he was the winner. who inaugurated it? Chester A. Arthur who was he? He was  an American attorney and politician who served as the 21st president of the United States from 1881 to 1885.
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Washington Monument [SEP] Introduction
The Washington Monument is an obelisk on the National Mall in Washington, D.C., built to commemorate George Washington, once commander-in-chief of the Continental Army (1775–1784) in the American Revolutionary War and the first President of the United States (1789–1797). Located almost due east of the Reflecting Pool and the Lincoln Memorial, the monument, made of marble, granite, and bluestone gneiss, is both the world's tallest predominantly stone structure and the world's tallest obelisk, standing tall according to the U.S. National Geodetic Survey (measured 2013–14) or tall according to the National Park Service (measured 1884). It is the tallest monumental column in the world if all are measured above their pedestrian entrances.