Deltanine

View of the 360 degrees revolving building 'Sufte Vollard' with one apartment in each floor, each of whose 11 storeys turns independently, in Curitiba, Brazil. Each flat has a surface area of 287 square meters.

The building is located in a residential neighborhood called Ecoville, in the capital of the southern state of Parana.

It is billed as "the world's only completely revolving tower."

The owner may also change the direction and speed of the revolutions. At low speed, each floor takes an hour to revolve.