The Słupia, the Radunia, and the Wierzyca are rivers whose location and energy of water flow was taken advantage of to build hydroelectric power plants. Many of them are still operating and can be visited. The oldest such power plant in Europe, Struga, or the Radunia’s highest-situated plant in Bielkowo, are only a few of the facilities well worth seeing. The principles of physics, chemistry, and mathematics are contained in machines and post-industrial sites, and presented at thematic exhibitions, such as in the Hewelianum Centre.

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The Gdańska Głowa Watergate

The gauging station building in Korzeniewo

The Museum of the Vistula River in Tczew – a department of the Central Museum of the Sea

The Przekop Wisły (the Vistula Cutting) with its estuary

The Przegalina Sluice

The post mill in Drewnica

The Biała Góra sluice complex

The Museum of Tower Clocks – a department of the Gdańsk Historical Museum

ORP "Błyskawica"

Dar Pomorza – a department of the National Museum of the Sea

National Maritime Museum

The Crane – a department of the Central Museum of the Sea

Państwowa Galeria Sztuki w Sopocie

The Dutch windmill in Palczewo

Kobben class submarine

The “Łaźnia” Contemporary Arts Centre in Gdańsk

The Chłodniewo pumping station

The Rybina Water Junction (Szkarpawa-Królewiecka-Tuga)