Where is the strongest magnetic field on a bar magnets and iron fillings?

The strongest magnetic field in a bar magnet is typically found at its poles, where the magnetic field lines are most concentrated. When iron filings are scattered around a bar magnet, they align themselves along the magnetic field lines, showing the strongest magnetic field at the poles and diminishing in strength towards the center of the magnet. This visual representation helps illustrate the direction and intensity of the magnetic field.