The question simple asks where “on earth” is the highest magnetic field. The highest field ever to exist in a laboratory was in Dresden, Germany of 91 Teslas for a very brief few milliseconds. read more
The strongest magnetic field right now is most likely in Florida at the Florida State University Magnet Lab where they have a continuously operating superconducting magnet that has produced over 27 Teslas and by the end of the year should be able to hit 32 T. read more
The Earth's magnetic field is strongest at the north and south magnetic poles, which are near the north and south geographic poles. The magnetic poles move over time and are generally not located precisely at the geographic poles. read more
The magnetic field of a bar magnet is strongest at either pole of the magnet. It is equally strong at the north pole compared with the south pole. The force is weaker in the middle of the magnet and halfway between the pole and the center. read more