Rynek Underground, housed in recently excavated medieval merchant stalls, tells the city’s entire history, from its first settlers to the death of Pope John Paul II. The popular attraction is most commonly visited as part of a tour of Krakow’s Old Town. If you have more time, you can combine Rynek Underground with other regional attractions, such as the UNESCO World Heritage–listed Wieliczka Salt Mine.
Krakow’s Old Town is great to explore with a walking tour, many of which stop at the Main Market Square, Cloth Hall (Sukiennice), St. Mary’s Basilica, and Jagiellonian University. Krakow Card holders receive free admission to Rynek Underground as well as 40 other attractions including Schindler’s Factory, Town Hall Tower, and Cloth Hall.