This German innovation can absorb 4 tons of water in less than a minute! Built with porous granite and hidden drainage, it lets water flow back into the earth—reducing runoff, managing stormwater, and replenishing groundwater

And tourists risk being left without it altogether. To get a small piece of paper in such cases, you need to scan the QR code and look at the banners for a few more seconds (imagine if you are in a hurry!). Foreigners may be left without any paper at all, since authorization goes through Vichat, and registering an account there is not so easy