General view of the “Crazy House”, which is completely built upside-down, in the village of Affoldern near the Edersee lake, May 7, 2014. Three friends came up with the idea to build the tourist attraction, which cost about 200,000 euros and took some six weeks to complete. (Photo by Kai Pfaffenbach/Reuters)

Visitors walk past the fully equipped dining table inside the “Crazy House”, which is completely built upside-down, in the village of Affoldern near the Edersee lake, May 7, 2014. (Photo by Kai Pfaffenbach/Reuters)

Dutch tourists Rosanna (R) and Nova pose for a photograph inside the bedroom of the “Crazy House”, which is completely built upside-down, in the village of Affoldern near the Edersee lake, May 7, 2014. (Photo by Kai Pfaffenbach/Reuters)

General view of the “Crazy House”, which is completely built upside-down, in the village of Affoldern near the Edersee lake, May 7, 2014.(Photo by Kai Pfaffenbach/Reuters)

A car is seen through the living room window of the “Crazy House”, which is completely built upside-down, in the village of Affoldern near the Edersee lake, May 7, 2014. (Photo by Kai Pfaffenbach/Reuters)

Dutch tourist Nova inspects the dining table inside the “Crazy House”, which is completely built upside-down, in the village of Affoldern near the Edersee lake, May 7, 2014. (Photo by Kai Pfaffenbach/Reuters)

General view of the bathroom inside the “Crazy House”, which is completely built upside-down, in the village of Affoldern near the Edersee lake, May 7, 2014. (Photo by Kai Pfaffenbach/Reuters)

Dutch tourists Rosanna (L) and Nova pose for a photograph inside the bedroom of the “Crazy House”, which is completely built upside-down, in the village of Affoldern near the Edersee lake, May 7, 2014. (Photo by Kai Pfaffenbach/Reuters)

A birdhouse is seen outside the “Crazy House”, which is completely built upside-down, in the village of Affoldern near the Edersee lake, May 7, 2014. (Photo by Kai Pfaffenbach/Reuters)