Doors within doors (and Piet Stockmans)

A double door within a double door? And what happens on the other side of the building? Certainly the doorways are aligned, as in some traditional house designs where the animals lived on one side and the humans on the other - they're called cross-passage houses and date back to late medieval times.

The lovely door is showing a piece by Belgian ceramicist Piet Stockmans. Starting as an industrial designer, he's been working in blue-slip porcelain for years, making cups and shards and body-based work and installations. A similar piece is in the ceramics galleries at the V&A.