Ed told that people are still building new wavy walls in the UK. “From individual projects (like one at Ashbocking, built in 1999) to those peppering new estates (like those in a new development at Lavenham by architects Wincer Kievenaar) where they’re added as a nod to the local Suffolk style,” he said.
They're called wythes, not layers.
But that's none of my business.