This is The Orbit, a piece of artwork standing 115 metres high and offering a view over the Olympic Park and East London.
Designed by Anish Kapoor, the looping twists of the structure represent the five Olympic rings.
Ticket holders travel up the centre of the structure by lift, giving them access to the viewing platform. After admiring the view, the downward journey is via the spiral stairway circling the structure.
Tickets need to be bought in advance, but we didn't.
We have not missed our chance, however. Although the structure will be closed after the Games, it is due to re-open in late 2013, allowing public access once again.
I was fascinated by this long mirror sloping down from the bridge over the lower footpath. The squares divide the reflection into multiple disjointed images...
and the uneven surface distorts the lines into a mess of colourful swirls.
My sister-in-law, Gill :)