[December, 2011] In Portugal, you can see a lot of buildings with tiled wall.
According to the audio guide in the hop-on-hop-off sight seeing bus we took towards the end of the travelling, these tiles started being used inside buildings in the 16th century.
In 19th century, they started using them on the outer walls, too.
The patterns of the tiles are different depending on the period, it is easy to distinguish their age, it said.
