"Someone called it the Harry Potter room," says Elena Astrid Rojas about the staircase.

In this short video, the two architects and partners at the Danish studio Vandkunsten Architects, Elena Astrid Rojas and Emma Hansson, explain the main idea behind the twisting and turning staircase in an apartment building in Oslo.

Address: Dronning Eufemias gate 36, 0191 Oslo, Norway.

Visit the place.

Want to know more? Visit Vandkunsten Architects' website.