"Chimney house is stylish and versatile inside featuring a spiral staircase leading to the master bedroom and ensuite, one on the ground floor for easy access and another upstairs for added privacy.

"A few years ago I had the chimney relined and the craftsman who ... enclosed patio. A spiral staircase runs to the upstairs bedroom and bathroom. Inside the walls are decorated with artworks ...

Now for the mystery: The staircase has no visible means of support. It is attached to the floor but other than that, the spiral stands alone and is often called a "hanging staircase." In addition ...

The rear wall of the chimney breast supports a cantilevered staircase which rises along it to give access to the gallery and the adjacent en suite master bedroom. The staircase consists of a 4mm-thick ...