Siebenzwingstein

Siebenzwingstein is a boundary marker made of interlocked granite blocks positioned at 607 meters elevation where the municipalities of Gränichen, Teufenthal, and Seon meet. The site also marks the convergence of the Lenzburg, Kulm, and Aarau district boundaries.

The marker dates from an era when seven separate communities with distinct judicial systems met at this boundary point. The merging of these territories evolved over centuries as administrative divisions shifted multiple times.

The name references the seven historic judicial districts that once converged here and shaped local governance for centuries. Today, the stone structure serves as a reminder of the intricate territorial divisions that defined this region.

The site is accessible through marked hiking trails in a rural setting with clear signage. The location sits on open ground offering views of the surrounding countryside.

Retterswil, one of the original seven communities, vanished in 1898 when it merged with Seon and lost its separate status. This merger is why the historic name still recalls the sevenfold convergence even though only three territories now meet at this point.