Trassenheide, Germany - A businessman who put up a house in Germany upside down, with its gabled roof poking into the soil, said Wednesday it was intended to be "an experiment for the senses."

Polish-born Klaudiusz Golos said he would admit visitors to the extraordinary building from Thursday.

It has been erected among other, more normal-looking private homes at Trassenheide in Germany's north-east corner, just a few kilometres from the Polish border on the holiday island of Usedom.

Visitors enter the 120-square-metre home through the attic and ascend to the "ground" floor. All the furnishings including chairs, the fitted kitchen and the toilets are also upside down, but the stairs are right-side up because visitors have to use them.

Tourists on the island have been coming to see the house from outside for months during the building work. To cope with the extraordinary weight of the building pressing on one point, the house was built with a steel frame.