Wieliczka Salt Mine, Kraków, Poland

The Wieliczka Salt Mine, located in the town of Wieliczka in southern Poland, lies within the Kraków metropolitan area. The mine continuously produced table salt from the 13th century until 2007 as one of the world's oldest operating salt mines, for most of this time span being a part of the undertaking żupy krakowskie. It is believed to be the world's 14th-oldest company.
The mine's attractions for tourists include dozens of statues and an entire chapel that has been carved out of the rock salt by the miners. About 1.2 million people visit the Wieliczka Salt Mine annually.
Commercial mining was discontinued in 1996 due to low salt prices and mine flooding.