Yves Klein

The original NFT? Sotheby's to offer a receipt for an invisible work by Yves Klein for €500,000

The French conceptual artist made nine "empty zones" in the last three years of his life, which could be purchased only with pure gold

From royal blue to Yves Klein blue: Blenheim Palace to host show of Modern master

Body paintings and sponge sculptures in artist’s signature ultramarine blue will fill rooms of stately home this summer

Art marketarchive

Key lots: Post-war and contemporary

Yves Klein, Günther Uecker, and Peter Doig are this season's highlights

Berlinarchive

What's on in Berlin: From Rothko to wrappings

A selection of shows at the leading contemporary and modern galleries

What's on in Los Angeles: Transport art and anti-war protest

With a notable appearance by Marie Raymond, mother of Yves Klein and a talented artist in her own right