The last scene of Pulp Fiction shows Vincent and Jules leaving the diner. This is significant as it ties up the events that occurred in the diner in a somewhat loose way. Throughout the movie, there are complex storylines and lots of twists. But here, as they leave, it's a moment of calm after the storm. It's as if the diner was a microcosm of the entire movie's world, with its own set of rules and interactions. And now they're stepping back out into the world we first saw them in, but we view them differently because of all we've learned about them during the film.
In the last scene of Pulp Fiction, Vincent and Jules are leaving the diner after their encounter with Pumpkin and Honey Bunny. They walk out into the street, still in their cool and nonchalant attitudes, leaving the audience to reflect on the wild and interwoven stories that have just been told.