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Wetzlar, located on the Lahn River, is a town with a rich history and a well-preserved medieval Old Town. Known for its optical industry and cultural landmarks, it’s a charming destination. The Wetzlar Cathedral is a stunning example of Romanesque and Gothic architecture. The Leica Camera Museum celebrates the city’s role in the history of photography. The Alte Lahnbrücke offers picturesque views of the river and surrounding buildings.