The Wieliczka salt mine, near Krakow, Poland is a fifth-biggest salt mine in the world but enormous nonetheless. Deep 1072 ft (326 m) with 9 levels and its corridors spread 498 ft (152 m) in length. The salt mine was first opened in the 13th century. Today it’s a part of the First UNESCO World Heritage List. Everything you see in these photos is made out of salt! The incredible underground structure contains 2,000 chambers, and chapels decorated with enormous chandeliers. “The corridors and even the floor are made of salt,” said Aleksandra Sieradzka from the marketing and communications department at the Wieliczka Salt Mine. “The chandeliers also contain crystal salt—the purest type of salt.” Chapels, the altars, and the statues of saints were carved by the sculptor miners. “There are a couple of chambers where you can have a party. One big ballroom (Warszawa Chamber) and a few smaller ones. The Mine is famous for its New Year’s concerts that take place during the first weekend of January.” What is even more mind-blowing is that this place you see in the photos is just the part that is allowed for visitors and it’s only 2% of the entire structure!
More info: Wieliczka Salt Mine.