It really was beautiful and the photos taken through the window can't do it justice. It was so vibrant and bright, and it had more than one layer of colour (if that makes sense), as well as the secondary rainbow.
This photo isn't great, but it shows how the rainbow was more than just a rainbow. From where we saw it, it continued to circle back round on itself until it hit the ground - or from our perspective, a car in the car park. Lucky car owner if they found a pot of gold in their car!