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Someone put up a tent on their balcony to escape their heat-trapping apartment during the night.
(discuss.tchncs.de)
Third extended heat wave within 6 weeks.
The previous one exceeded 40°C, and the buildings not yet had time to completely cool down from that one before the third wave hit.
I was considering putting up a tent in my garden myself, but as I own a ground floor flat, the indoor temperatures did, with the help of some additional cooling measures, thankfully not exceeded 27°C.
I did this when I was visiting Mexico. Probably some of the best sleep I've had in my life. Balcony was on the North side of the building. Even though it was hot outside, the extra airflow through the hammock kept me pretty cool.