This is on private property and the CO has permission from the homeowner to place this cache. You may park on the grass near the cache.
A wishing well is a term from European folklore to describe wells where it was thought that any spoken wish would be granted. The idea that a wish would be granted came from the notion that water housed deities or had been placed there as a gift from the gods. This practice is thought to have arisen because water is a source of life, and was often a scarce commodity.
This isn't just any wishing well, it's a GeoFootstomper wishing well that provides well-wishing to all attempts to crank up the treasures hidden inside.