Patterns of Lisbon. Contemporary Azulejos

Lisbon features an impressive collection of azulejos. Here’s a walking route for all those who want to go tile spotting and see some exceptional contemporary creations.

Lisbon’s Patterns and the 17 Ways to Symmetry

Opposites may attract in infinite ways. Symmetry, though, can only be achieved in 17 ways. And this exact number was proved by Mr. Evgraf Fedorov in 1891.