A city planner is making a scale model of his city for his office building. The model has a coordinate grid where each unit is 1 meter. On the grid, the tallest building is located at (3, 1), the city park is located at (3, 4), and the public library is located at (4, 4). The natural history museum is located so that the four buildings make a perfect rectangle. What are the coordinates of the natural history museum on the model?