There will not be very many spots locally that you can stand at and have as many historical features in close proximity. I will try and explain them in terms of traditional caching.
Lest We Forget - Galston.

The closest feature to the cache itself is Galston's war memorial. Sitting at the junction of Duke Street and Station Road it is a main feature for anyone heading up towards Sorn. The memorial immortalises those locals who fought bravely during the great wars and could not return to the Irvine Valley. To those individuals we owe a great debt.
Sidetracked - Galston.

Bit of an odd one, as there is no railway station or line. Where you are standing is Station Road (a wee clue perhaps). If you look uphill towards the Sorn direction you will see the brow of a hill. The land to the left, which is currently occupied by the BT exchange was home to Galston railway station up until 1964. The are still remnants of the old line heading out towards Hurlford and in the opposite direction towards Newmilns. Yet another thing taken away from the economy of the Irvine Valley.
Galston - World Handball Champions!

Every city, town or village has some sort of sporting accolade they can boast about. Well, Galston were the world handball champions at the beginning of the 20th century. The 'court' was at the base of the Barr Castle which you should be able to see from GZ. In the mid 1920's a team made up of the Murray brothers reigned supreme. Locally the game was developed primarily by men from the farming community, which added to the physicality of the sport. The teams were three-a-side. The last recorded game to be held at the Barr Castle was in 1939.
Church Micro - St Sophia's.

At GZ you will see a portion of St Sophia's RC church. By its architectural design it stands out from the crowd. Built in 1885-6 with the design from Sir Robert Anderson, it is based on Hagia Sophia church in Istanbul. The red brickwork makes it stand out from the conformist design of most other places of local worship. In my formative years growing up in Galston every time I looked at the upper tier of St Sophia's I could always see a cartoon bird looking back at me, with a pointy hat, two eyes and a small beak. Do you see it too?

And now for the cache. This is a standard magnetic micro - none of the micro nonsense. It is located directly beside a relatively busy thoroughfare, but if you feel the need you could park up and walk the six feet to its resting place. This area can be busy with parking especially when the local bowling club is open. I would recommend parking on the opposite side of the road from the war memorial as by doing this you are not blocking the vision of persons driving out of Duke Street. It's not a lot to ask.
Over to you, and happy hunting.