Poland's Largest Historic Structures Draw Growing Tourist Interest

The 1848 Fojutowo Aqueduct, the longest and most massive water‑carrying structure in Poland, spans about 75 metres across the Great Brda Canal in the Kuyavian‑Pomeranian region. Restored in 2002, the aqueduct allows visitors to walk beneath flowing water for free, showcasing 19th‑century engineering inspired by Roman designs.

In the Subcarpathian village of Stępina, a 393‑metre underground railway shelter built in 1940‑41 for Nazi high‑command trains remains the world's largest above‑ground railway bunker. The reinforced concrete tunnel, once used by Adolf Hitler and Benito Mussolini, now serves as a tourist attraction highlighting WWII history and the site’s former military purpose.