Have you heard of leather sculpting? Well, it’s rather innovative, and it is Mark Evans is a claim-to-fame. He has etched some of the most famous faces in leather, resulting in stunning artworks. And now impressed by his skills, an anonymous Russian billionaire has decided to etch his walls in leather, courtesy of the master leather sculptor himself! Mark Evans will be creating the world’s most expensive wallpaper in two luxury rooms of the billionaire’s Moscow home. This hand-engraved wallpaper will cost around $23,675 per square meter, bringing the project’s full cost to a staggering $2.71 million. This will hone his skills, but all that moolah will certainly make Evans an even happier happy man!