Last updated at 22:47 01 September 2007

The builders lavished attention on every last detail.

First they constructed the house, then they decorated and fitted it out it to the highest specification.

But to the thousands of people who thronged to see this astonishing building in northern Poland, it looks as if a crucial fact escaped their attention.

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Perched precariously on its roof, the house is, very definitely, upside down.

Thankfully, the spacious abode is not a building project gone wrong but Poland's latest tourist attraction and has already drawn throngs of people to the tiny village of Szymbark.

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Crowds flocked to its opening earlier this week and then queued for hours to troop through the confusing, disorientating rooms.

Many complained of mild seasickness and dizziness after just a few minutes of being in the structure.

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Rather than simply being a bizarre tourist attraction, the house is also meant to be a profound statement about the Communist era and the state of the world.

It is the work of Polish businessman and philanthropist Daniel Czapiewski who wanted visitors to consider the

wrongdoings of humanity.