Yaacov Agam, an Israeli artists whose brightly colored geometric sculptures and paintings delighted the eye with optical illusions and moving parts, and whose many public artworks included the world’s largest menorah and a rainbow-hued fountain that breathed fire and played music, died on June 18 at his home in Rishon LeZion, Israel. He was 98.

Mr. Agam called his works Agamographs, and he created an eyepiece with prisms for viewing them, calling it the Agamoscope.

“Art is one of the most important things from a moral, educational and public point of view,” Mr. Agam told the Haaretz newspaper of Israel in 2011. “We need art in the public space, not in the museums and not in the collections of rich people.”