One was to a large peat works not far away in the depths of the Somerset Levels at Shapwick. It's still there - been past it on cycle sportive rides a few times in recent years - but a shadow of its former self and growing smaller by the year as peat becomes more and more unloved in horticultural circles.
It was so big it even had its own internal narrow-gauge railway. But that's not why I recall this trip. The sole reason is because one of my classmates - the accident-prone one which every class has - managed to squash his hand and arm in a machine and had to be rushed to hospital... I think he was OK and no long-lasting damage was done...
The second and most memorable was in my last year of Secondary when we went to Wimbledon during the early stages of that years' tennis. Huge fun and mainly because it was a great day to spend with all the girls and getting up to mischief with them
We even managed to blag tickets to whatever match was taking place on Centre Court that day... Someone famous was playing but it passed me by... I was far more interested in my female company...
The coach trip home that evening was good and somewhat 'educational' for a 15 year old boy