Nicolaus Copernicus House, Medieval house museum in Toruń, Poland.

The Nicolaus Copernicus House occupies two connected medieval buildings on Kopernika Street with exhibits about astronomy and scientific discoveries. The spaces contain archaeological artifacts and room reconstructions that reflect the style and character of the period.

The search for Copernicus's birthplace began in 1711, when chronicler Jakub Henryk Zernecki pointed to a corner house on Starotoruńska Street. In 1881, mayor Georg Bender found a 1450 register of citizen obligations showing that Copernicus's father lived at today's Kopernika 17, then a wooden building. In 1985, historian Tomasz Jasiński identified the neighbouring brick house at Kopernika 15 as the actual birthplace; the memorial plaque was moved there.

The exhibits show how wealthy merchants lived in medieval Toruń through period furnishings and everyday objects on display. Reconstructed rooms reveal the daily routines and domestic life of this era.

The museum is open Tuesday to Sunday with extended hours during summer months and guided tours available in multiple languages. It helps to check current opening times beforehand, especially outside peak season.

The museum opened in 1973 in restored late-Gothic townhouses at Kopernika 15 and 17, and was modernised in 2017–2018. Its basement holds a permanent exhibition called Świat toruńskiego piernika, on the Toruń gingerbread tradition, while upstairs are memorabilia of Copernicus and his family and a collection of editions of De revolutionibus orbium coelestium.