Macaulay Culkin was paid $4.5 million, then the biggest ever salary for a child star, as well as 45 times his salary for Home Alone (1990).
The "pigeon attack" sequence was filmed on March 25, 1992. According to Joe Pesci, the crew covered him and Daniel Stern with real birdseed, and about 300 pigeons.
Because of the cold temperatures, several cameras froze during production.
Director Chris Columbus recalled that the production spent a lot of money on artificial snow for Central Park, and then New York City had a blizzard.
All of the children who appeared in the toy store scene were allowed to take their favorite toy home as part of their salary. Even though it didn't work, and was created specifically for the movie as a prop, Macaulay Culkin was allowed to keep the Talkboy.
Frank Oz: After Harry Lime and Marv Merchants leave the fish market and walk down the sidewalk, Marv steals money from the red donation can. Right after Marv says "Now we're the sticky bandits" the scene changes. Frank Oz places money into the red donation can and walks away.
Monica Devereux: The hotel operator with whom Kevin makes a reservation, pretending to be his father.
Donald Trump: In the Plaza lobby, where Kevin asks him for directions. Trump owned the hotel during filming. He bought it from The Childs Company (now Sonesta) for $470,500,000 in 1988, then sold a controlling interest to Saudi and Asian investors for $325 million in 1995, retaining a management and policy-setting role in the hotel's operations.
Chris Columbus: Holding a child and pointing to a stack of toys when Kevin walks through the toy store.