After 1,000 years, the European bison is back in Switzerland The "Wisent Thal" project brought the animals to the Thal Nature Park in 2022. The "Wisent Thal" project aims to return Europe's largest living wild animal to the Swiss Jura Mountains – where bison were once widespread. This question led the project's opponents all the way to the Federal Supreme Court, which, however, gave the "Wisent" project the green light. In 2027, those responsible for the "Wisent Thal" project will submit a comprehensive report on the reintroduction of the bison. Depending on the outcome, the wild animals will be released into semi-freedom in a subsequent phase, and ultimately into the wild.