Teistungen is a municipality in the district of Eichsfeld in Thuringia, Germany.

It is located in the historical Eichsfeld, formerly a remote exclave of the Electorate of Mainz in Central Germany.

In 1283 the fief was acquired by the knightly family von Hagen who resided in nearby Westernhagen Castle at Berlingerode (destroyed in 1525).

The indoor exhibition covers more than 1,000 squaremetres and is complemented by an outdoor area including a circular trail along the former Iron Curtain.

As the museum exhibition is displayed not only in German, but also in English, it attracts tens of thousands visitors from all over the world every year.