After going to Broadgreen Hospital today I wandered around Liverpool. The minton tiled floor in St George's Hall is 'revealed' at the moment. In 1883 it was covered with a wooden dance floor to preserve the tiles and it is only revealed about once every ten years.
The 30,000 tiles were laid in 1852 at a cost of £2,000. It is 140 feet long and 70 feet wide. Minton tiles from the Mointon Hollins factory in Stoke-on-Trent can be found worldwide and appear around fireplaces in the White House.