Austrian computer art pioneer Herbert W. Franke shares glimpses of z-galaxy, the virtual world and 3D exhibition space he began building on the Active Worlds platform in 2005. The objects populating it—trees, pavilions, sculptures—were created procedurally using Wolfram Mathematica, the 94-year-old veteran explains on Twitter. Z-galaxy (“z stands for Konrad Zuse”) officially opened in 2008, showing algorithmic works by Franke and friends.