Altdorf, Schaffhausen
Altdorf was a municipality in the canton of Schaffhausen in northern Switzerland. On 1 January 2009 Altdorf merged with Bibern, Hofen, Opfertshofen and Thayngen to form the municipality of Thayngen. References

Twin towns - twin cities
  Óbuda-Békásmegyer – Hungary ''since 2015

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Former municipalities of the canton of Schaffhausen
Former municipalities of Switzerland