Museumsdorf Niedersulz, Open-air museum in Sulz im Weinviertel, Austria.

Museumsdorf Niedersulz is an open-air museum with around 80 historical buildings arranged in a traditional row along a central village street. The buildings display different architectural styles that reflect how the settlement was organized and used in earlier centuries.

In 1977 Josef Geissler opened the Weinviertler Dorfmuseum in Niedersulz's disused primary school; in 1979 the municipality provided a 5-hectare meadow by the Sulzbach for the open-air museum, whose first building was a threatened Streckhof farmhouse. A voluntary association ran it until 2008, when buildings and collections passed to a foundation; a 2010 provincial parliament decision funded a roughly 9 million euro expansion to 20 hectares, opened on 16 May 2012.

Craftspeople such as blacksmiths, wheelwrights, and shoemakers work in their workshops on weekends, demonstrating techniques that were common in rural life. Visitors can watch them and understand how people performed their daily work in earlier times.

Visitors can walk through the museum on established paths to view the buildings both outside and inside where permitted. A village inn on the main square serves regional food and drinks, while gardens, picnic areas, and restrooms are available for visitors.

The museum maintains rare historical breeds of livestock including sheep, pigs, geese, and chickens that were common in farming communities of the past. These animals help complete the picture of how rural people lived and worked with their land.