Underground Tourist Route

Medieval merchant cellars linked into a 470-metre underground tourist trail

Below the market square, Sandomierz's medieval merchants dug cellars into the soft loess to store their goods. Over time, the cellars of adjacent buildings were linked together, creating a network that now extends 470 metres and reaches down several storeys below street level.

The underground tourist route takes about 45 minutes and is one of the best of its kind in Poland — well-lit, with clear information panels, and genuinely atmospheric. The temperature underground stays around 10°C year-round, which makes it a welcome escape in summer heat and sharply cold in winter. Entry is from the town hall on the market square. Guided tours in Polish run frequently; English-language tours can be arranged ahead.

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A story
The cellars were built by Sandomierz's medieval merchants to store goods at a stable cool temperature — the loess subsoil of the hilltop is ideal for this. Over time the cellars of adjacent buildings were connected, creating an underground network. Legend holds that the route was used to escape Tatar raids, though historians debate whether the timing works out. What is not in dispute is that parts of the route date to the 13th and 14th centuries, making it one of the oldest surviving underground complexes in Poland.

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