Verenahof

In 1522, Emperor Charles V and his brother, Archduke Ferdinand of Austria purchased Verenahof along with other territories in the vicinity (Tengen, Kommingen, Wiechs am Randen) from Count Christoph von Nellenburg [de], who expressly wished not to sell these possessions to the Swiss Canton of Schaffhausen.

In the 17th and 18th centuries there were repeated disputes between Tengen and the adjacent Schaffhausen over the access roads and the exact delimitation of the enclave.

[1]: 119 In 1806, the Grand Duchy of Baden inherited sovereign rights over Verenahof, which became an enclave within the canton of Schaffhausen.

[1]: 285 In the 1920s, there were several attempts to integrate the Verenahof into Switzerland but the Baden Ministry of the Interior repeatedly rejected these.

The 43-hectare (430,000-square metre) territory, containing three houses and eleven West German citizens, became part of Switzerland[3][4] with the transfer of 529,912 square metres (5,703,930 sq ft) of West German land parcels (that had administratively been part of the German towns of Konstanz, Öhningen, Rielasingen, Wiechs am Randen, Altenburg, Stühlingen, Weizen and Grimmelshofen) in exchange for the transfer to the Federal Republic of Germany of an equal area of Swiss land parcels (which had administratively been part of the Swiss towns of Kreuzlingen, Hemishofen, Büttenhardt, Opfertshofen, and Merishausen).