Trim Agricultural Show, or, as it's otherwise known, The Royal Meath Show takes place annually in porchfield in Trim on the first Sunday in September each year.
The setting for the Royal Meath Show is spectacular with St John’s Castle in the background and the river Boyne running by at the bottom of the hill. The main events of this agricultural show are the judging of cattle, sheep, goats, horses, dogs, and home industries and there are also trade stands and vintage machinery and many other attractions. 2013 will see the 73rd annual agricultural show in Trim and the voluntary organising committee have been working tirelessly to once again provide lots of entertainment for all the family. A warm and friendly welcome awaits all visitors to the Trim Show when everyone gets a chance to experience country life in all its glory.
http://meathfestivals.ie/ie/festivals/trim-hot-air-balloon-fiesta/