This page shows examples of Mathematical Tiling  a kind of 'fake'
brickwork made of thin tiles hung on top of each other, nailed onto
wooden battens and then pointed (i.e. with mortar placed betwen
them) like bricks. They made a building look like a brick building
 and more posh  but were much cheaper!
It is often very difficult to tell if the front of a building is
real brick or mathematical tile  a clue is at the side... if the
'bricks' continue round, then they are probably real. If not (if
there is wooden board or tiles) then possibly the front is mathematical
tiles.
Look at these examples and see how tough it is!
