This beautiful chapel is approximately 135m underground in the middle of the Wieliczka Salt Mine, near Krakow in Poland. The mine was started in the 13th century, and produced salt until as recently as 2007. If you don’t mind waiting you can book your wedding in the chapel, but I believe the waiting list is a couple of years or so.
Everything is carved from rock salt, including the floor tiles and bricks. They are not real – they are just carved directly into the rocks.
And here is a picture of the entire room. Beautiful, don’t you think?