Stanze el Genio in Palermo, Sicily http://www.stanzealgenio.it/
This private collection of Sicilian tiles is absolutely a hidden gem.The collection has more than 2300 tiles from sixteenth to early twentieth century. The owner started collecting tiles on the streets as a child, and now he has probably the largest tile collection in the world.
Stanze el Genio is not easy to find, but well worth the effort. The collection is located in a private apartment, with a tiny entrance on a sketchy street corner. It took quite a bit of courage to ring the bell.
I don’t think I can describe the tiles better than the pictures, so…