When was the last time that the World's Fair was held in New York?
The 1964/1965 New York World's Fair was the third major world's fair to be held in New York City. Hailing itself as a "universal and international" exposition, the fair's theme was "Peace Through Understanding", dedicated to "Man's Achievement on a Shrinking Globe in an Expanding Universe"; American companies dominated the exposition as exhibitors.
The theme was symbolized by a 12-story high, stainless-steel model of the earth called the Unisphere. The fair ran for two six-month seasons, April 22 – October 18, 1964 and April 21 – October 17, 1965. Admission price for adults (13 and older) was $2 in 1964 (equivalent to $15.26 in 2015) but $2.50 in 1965, and $1 for children (2–12) both years (equivalent to $7.63 in 2015).