1904. New York City introduced white tiles that measured about 1ft x 3inchs. They lined the inner subways of New York Cities metro stationed and also had mosaic signs intertwined into the tiles. They have become labeled as subway tile and can be found now as backsplash's in some of the most beautiful homes. These tiles can be found at any tile store averaging around $6.99/ tile, or $58.00 for a square foot. Not only does these tiles come in clay form, they also come in glass or marble!