The next image is of the other soft drink pavilion, the Coca Cola World of Refreshment. I wonder if they wished they had worked with Walt Disney?
The Vatican actually sponsored a pavilion and I believe this is the main structure, a compact baroque Gothic church. Edit- experts in the New York World's Fair of 1964 have alerted me this is the Thailand Pavilion. Thanks guys!
Finally for all the monorail fans, a shot of the AMF monorail under the track.
Tomorrow more images from the '64 Fair.