Vienna's Flak Towers and Climate Biennale Insights

My last day in Vienna, for now. I went to see another part of the Klima Biennale that bills itself as "the first ever climate-focused art festival in the world".
On the way there, I walked through the Augarten and encountered two of the enormous concrete flak towers from World War 2 that still stands today.
There was a lot of work to see, and I'll make another longer video, but here you can get an impression of what was on show.
Afterwards, I headed back to the airport, and caught the early evening flight back to England.
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