Barcelona Olympics 1992
I mostly remembered the 1992 Olympics it held for the dramatic opening ceremony, when it looked like an archer lit the flame, but apparently the arrow missed and it was done by remote control. I later researched it, and saw that Linford Christie and Sally Gunnell won athletics gold medals for Team GB in the stadium.
The yellow towers in the photos were flame holders.
Barcelona Olympic Stadium Photos
In the fifth photo below I saw the two clouds above two trees having very similar shapes, as if synchronised.
I wasn’t so sharp with the stadium, not knowing if it was open as I walked right around it. After taking a few photos through gaps in the walls I reached its front to find the gates wide open, and free to enter.