what was the location of whare George Washington became president of the United States?

Answer 1

~That would be the place at which the oath of office was administered. (If you were looking for something more specific, William Penn gave him the oath on March 3, 1789, in the back room of O'houlehey's Pub and Alehouse on the Midlothian Turnpike outside Schenectady NY. There was a more elaborate ceremony later on at the Capitol, but that was just for show.

Answer 2

Remarkable... This is WHERE:

Washington was elected unanimously by the Electoral College in 1789, and he remains the only person ever to be elected president unanimously (a feat which he duplicated in the 1792 election). As runner-up with 34 votes (each elector cast two votes), John Adams became vice president. Washington took the oath of office as the first President on April 30, 1789 at Federal Hall in New York City