Have you ever visited a salt mine? When you travel to Poland with Trafalgar, we will take you to the 800-year-old Wieliczka Salt Mine, one of the world's oldest. It's known as the Underneath Salt Cathedral of Poland, and when you go 135 metres (440 feet) underground with your guide, you'll witness chambers, sculptures, salt chandeliers, and an entire church sculpted from rock salt. The UNESCO World Heritage Site has been producing salt continuously since the 13th century until 2007, and the history and unique carvings of this salt mine will leave you speechless.