In 2005, the american sculptors Dan Havel and Dean Ruck built some kind of vortex into two houses. They called the resulting artwork, which lead like a tunnel through the house, “Inversion”.
Unfortunately, this weird construction had only a very short life span. The two houses were scheduled for destruction just a few months later – and most likely, the schedule was kept.
Dan Havel pointed to a short video documentary about Inversion. It includes moments from the construction, interviews with Dan Havel and Dean ruck and also the final destruction of the installation.