TinyDippy and I went and did a fantastic multi-cache today. We parked in a village we'd never visited before and set off to the given co-ordinates. We walked up to The Millennium sundial which consists of thirteen pairs of standing stones arranged in a semi-circle. As the sun shines between each stone, the time can be calculated.
There is model of the solar system set into the ground. In the center is the sun (the photo shows TinyDippy standing on the sun). The planets are placed around the sun, each engraved with facts. We found all the answers to the clues we needed, a bit of maths later and we were on our way to the final cache- a rather cunningly hidden ammo box.