The Mikaszówka Lock, located at the 69.1-kilometer mark of the Augustów Canal, is the eleventh lock of the canal in the direction of the Biebrza River. It was built in 1828 by Lieutenant Engineer Wojciech Korczakowski, who played a key role in the construction of this waterway system. The lock features a water level difference of 2.44 meters, making its function of regulating water flow exceptionally important. As a piece of hydrotechnical architecture, it is 43.31 meters long and 6.05 meters wide, and its wooden gates give it a unique, historical character. This structure is not only a testament to the engineering techniques of its time but also a reflection of the local culture and history of a region that developed around navigation and water transport. The Augustów Canal, including the Mikaszówka Lock, played a significant role in shaping trade routes, connecting Eastern Europe with the rest of the country. It is worth noting that the Mikaszówka Lock, like other structures along the canal, attracts tourists who can admire the picturesque surroundings and learn about the history of the canal’s construction and its transportation significance. An interesting fact is that the construction of the Augustów Canal was one of the largest engineering projects in Poland during the 18th and 19th centuries, and its opening in 1839 made it one of the region’s most important attractions. Today, the Mikaszówka Lock, while maintaining its historical function, has become an example of the harmonious integration of technology with nature and local tradition, as well as a key point on water routes that are highly popular among sailing enthusiasts.