There are not many rainbows to be found in the 'Old Grey Town', certainly not permanent ones!
This is one you should not miss, it will brighten up your day and will take you to a place of great interest.
The rainbow symbolises the Prism of Light that is the inspiration for the Quaker Tapestry, housed in the Stramongate Friends Meeting House.
This is the site of one of the very first Friends Meeting Houses, and the existing fine building was built on the site, replacing the original from around 1652, the year of the birth of the Quaker movement.
Some of Britain's most innovative people in history were Quakers, from Elizabeth Fry to the Cadbury family, to name but two.
You can find out all about them by taking a look around the Tapestry Museum.
The cache is a nano container, so bring your own pen! It can be discovered from the pavement, no need to crash about in the undergrowth for this one.