The group of buildings ‘Gazownia na Woli’ is one of the best preserved ancient industrial architecture complexes, from the turn of the 19th and 20th centuries. The Museum houses machinery and technological equipment of impressive size and exquisite construction, all preserved in excellent working condition. Also shown is the interior of a typical 19th century living space, which displays common gas appliances used in households, including a gas refrigerator, kitchen gas-coal stove, gas iron, thermos, an original bathroom furnace and a unique machine for boiling coffee.