Cob Kitchen and Masonry Heater Isle by Kirsten Maria Klibo in Nordstjernen Ecovillage, Hundested, Halsnæs, Denmark.

Cob Kitchen and Masonry Heater Isle by Kirsten Maria Klibo in Nordstjernen Ecovillage, Hundested, Halsnæs, Denmark.
Amazing exterior: http://goo.gl/6kKa6a 
My kind of kitchen :)

Masonry heaters is a device for warming an interior space through radiant heating, by capturing the heat from periodic burning of fuel (usually wood), and then radiating the heat at a fairly constant temperature for a long period .

The technology has existed in different forms, from back into the Neoglacial and Neolithic periods.
Archeological digs have revealed excavations of ancient inhabitants utilizing hot smoke from fires in their subterranean dwellings, to radiate into the living spaces.

These early forms have evolved into modern systems.

Evidence found from 5,000 B.C. of massive blocks of masonry used to retain heat foreshadowed early forms of fire hearths that were used as multifunctional heating sources.

Later evolutions came in the Roman hypocaust, Austrian/German (kachelofen, baths) using the smoke and exhaust of a single fire.

In Eastern and Northern Europe and North Asia, these kachelofens (or steinofens) evolved in many different forms and names: for example the Russian Stove/Fireplace (Russian: Русская печь), the Finnish Stove (in Finnish: pystyuuni or kaakeliuuni, "tile oven") and the Swedish Stove (in Swedish: kakelugn, "tile stove" or "contra-flow stove") associated with Carl Johan Cronstedt.

The Chinese developed the same principle into their Kang bed-stove. The masonry heater has gained renewed domestic popularity recently because of its heating efficiency.
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