Nothing activities and the thing that you can do is breaking for a bit and then head to some natural park outside the city.
The city is so quiet and nothing to do. Not too much tourists.
Uttaradit is a city which you may stop over for a rest before proceeding to other northern province from Bangkok.
It is a small city but you can get what you want .food drinks activities .stay one or two days is enough, not many places for sighting.