In 2024, artist Tanja E. Algra joined the online challenge "30 Patterns in 30 Days", organised by the Global Centre of Islamic Art. What began as a daily exercise in constructing a geometric pattern grew into an intensive art project that occupied her for almost a year.

This book follows that journey. Using only compass, ruler and pencil, Tanja E. Algra built each pattern from a classical geometric construction, then transformed it into a finished artwork through colour, rhythm, texture and personal interpretation.

Alongside the completed pieces, the book reveals the process behind them: sketches, intermediate stages, technical choices, failed attempts, discoveries and sources of inspiration.

“30 Days 30 Patterns” is not only the record of an artistic challenge, but also a tribute to the beauty of geometry, to centuries-old visual traditions, and to the joy of creating.