The events have competitions, with prizes awarded by judges, allowing farmers and breeders to show off their cattle or crops.
Other trade stands and activities have been added to make the shows more attractive to locals and visitors.
Often there are features such as showjumping, funfairs, falconry, military displays and food exhibitions.
In the early years these shows used to be held in different locations each year, but in the 1960s the local agricultural societies started to buy land to create permanent showgrounds.
The first purpose-built showground was in Harrogate, where the Great Yorkshire Show is held.