These are probably the oldest still-working light bulbs in the world.

It is known that the plant was built in the 18th Century. At first, the facility was a mill, then it was a hydro plant supporting a sawmill, a wood-drying plant and then a cardboard factory. It was transformed into a hydroelectric power plant from 1889 to 1896, under a Jewish factory owner, who soon declared himself bankrupt. The Germans re-launched the plant. For almost half a century, the station has been in the hands of successive generations of the Kashubian family of Gliszczyński. It features a Pelton turbine, which was produced in 1898 by the large Schichau factory – the largest factory in Elbląg. The devices continue to serve the plant, and since 1920 they have generate 250 KW of energy. The structure is considered the oldest and most valuable facility of its kind in Europe.