Home DIY

A friend of a friend had something that sounds very similar (but rectangular) in their flat in Berlin. It was pretty amazing. I got the impression that they were a common feature of those kinds of flats/apartments.

Sounds like a bigger version of this

http://upload.wikimedia.org/wikipedia/commons/b/bf/Kakelugn_fr%C3%A5n_R%C3%B6rstrand_ca_1900.JPG

http://en.wikipedia.org/wiki/Masonry_heater

We have one in our house in sweden. Takes a while to heat up, but once warm, you only need to make one fire in the morning and one in the evening to keep the temp steady. It's filled with sand that holds heat really well, all heated up by the chimney that's looped around internally so the heat passes up and down the whole thing a few times before leaving