A medieval stone building, the so-called "Stone House", is located in a multi-part building complex at Benediktsplatz 1 in Erfurt's old town. This is an outstanding example of late medieval secular building culture, which can be attributed to Jewish owners from the end of the 13th century at the latest. As such, it complements the ritual buildings of the Old Synagogue and Mikveh and is a further component of Erfurt's UNESCO World Heritage Site. An extraordinary number of essential structures from the time of construction around 1250 have been preserved, including the portals to the two main storeys, the storey beam ceiling, the west façade, the original stepped gable and the roof timbers. Unique in Europe is the preserved interior of the upper floor room with a pointed arched light niche with smoke outlet, barely altered outer walls with scribed joints and a colorful wooden beam ceiling whose beams have been dated to 1247.

Today, the building complex at Benediktsplatz 1 houses offices and business premises of the city of Erfurt. Initial investigations began back in the 1990s in parallel with the renovation work on the building complex. From 2015-2017, the entire complex was researched as part of a DFG-funded project. On the basis of the ongoing historical building research and restoration investigations, further measures will be carried out and a utilization concept tailored to the valuable existing building will then be drawn up. For this reason, the "Stone House" is currently not open to the public. There is only a display depot of medieval Jewish gravestones in the cellar of the "Stone House", which can be visited as part of a guided tour.