Čertovka, Medieval canal in Malá Strana, Czech Republic.
Čertovka is a medieval waterway that winds about 740 meters through Malá Strana, flowing between old stone buildings and beneath multiple bridges. The water forms a natural barrier and connection point for the layered architecture of this historic neighborhood.
The channel was created in the 12th century by the Knights of Malta to power a series of water mills. Over time, this construction fundamentally reshaped the area's geography and formed new landmasses.
Three medieval mills still stand along the waterway, with the Grand Priory Mill particularly visible from nearby bridges. Local people and visitors use this quieter stretch as a retreat from the busier parts of the district.
A boat tour offers the best experience, passing under low bridges and through narrow channels between historic buildings. Visit on quieter days when you can better observe the water's path and how it weaves through the surrounding structures.
By channeling water through the area, this construction actually separated Kampa Island from the mainland and created an entirely new geographic division. This island formation remains visible today and shapes how the whole neighborhood is laid out.
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