Blew my mind living in a Berlin apartment, that the heating & hot water was managed centrally for the entire block (not the apartment block, the whole city block). Too used to Anglo cities where everyone does for themselves.

Yep, my European apartment has been heated with waste heat from a nearby data centre since 2013: https://eicher-pauli.ch/referenzen/ewz-waermeverbund-binz-zu...