The movie was filmed in two countries: the UK and the US.
Felicia's house
In movie
Scene where Felicia is walking towards the house.
Real
Scene was shot In a private home in the Forest Hills neighborhood of New York City.
New York
Park
In movie
Scene where Leonard and Felicia in the park.
Real
Scene was shot The scene was filmed in New York's Central Park at Poole Pond, at the north end of the park.
New York
Central Park