Zadar. Greeting to the Sun, on the Music of Sea

It looks like a huge disco floor placed right near the water of the Adriatic sea: this is the Greeting to the Sun, playing from dusk til dawn playful colourful lights generated by solar panels.

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.

A Way to Lagos

It is really amazing how Portuguese little towns, with their traditional small white houses and their nice, cozy, old-school vibes, can also be the scene of some stunning optical designs.