Today it is a crime and prison museum called Horsens Prison Museum (Fængselsmuseet), a conference and business facility, and a concert venue where bands such as Metallica have played.

[1][2] Following expansions in 2016, it is the largest prison museum in the world.

[4][5] The prison was commissioned in 1853 and was closed in 2006 when the last remaining inmates were moved to the State Prison of East Jutland at Enner Mark, west of Horsens.

Among the famous prisoners were Carl August Lorentzen (1896-1958) who escaped in 1949 through a 20 m (66 ft) tunnel he initially dug with a spoon, politician Peter Adler Alberti who gained notoriety due to an embezzlement scandal in 1908, Jens Nielsen (1884-1892) who was executed in 1892 (the last person to be executed in Danish peacetime), and German Nazi Werner Best who was the administrator of Denmark during the World War II occupation.

Artifacts relating to Lorentzen's escape, Alberti's and Best's imprisonments, and the axe used in Nielsen's execution are among the items at the museum.