Specifically, we were on a Banksy hunt (much, much more of that to come) and whilst we found many, we didn't spot two of his latest creations marking the London 2012 Olympics.
Both images (Going for Mould - top and Hackney welcomes the Olympics - bottom) are courtesy of http://www.banksy.co.uk
In this age of social media quite how these two enormous pieces still manage to hide their location is a mystery, but as yet, nobody seems to know where they are.
We did however, spot some Olympic street art by other artists - both official and unofficial!
This huge board by Chilean street artist Otto Schade (Osch) can be found at the rear of the Truman brewery off Brick Lane, London.
You can feel the energy and power of the cyclist and gymnast through the sinewy detail and the blood pumping through their veins and organs.
This one is on the wall opposite, and I raised a smile at the dirty protest of artist unknown.
Then of course, there's the official street art, in the form of decorated Wenlocks, dotted around Brick Lane. The girls had lots of fun spotting these. They reminded me of the elephant parades - I just hope Ruby doesn't want us to try and recreate these!
So, which gets your vote - the authorised or the unauthorised?
Check out Maggy's fabulous post featuring lots of Banksy.