Spoon & Tamago describes several ways in which public parks in Tokyo have been carefully prepared to convert into emergency shelters in the event of a natural disaster, such as an earthquake. Among the features are pagoda shelters that are sized for tent covers, manholes that give access to the sewer system for portable toilets, and solar powered lights that direct people to shelters during power outages.
I'm especially impressed with the simple but clever addition of wood burning cook stoves to park benches. You can see two such designs above.
That is so cool! However i think that only works in Japan.
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