my favorite place in Ellora. The Vishwakarma (Cave is the only chaitya griha amongst the Buddhist group of caves. It is locally known as Vishwakarma or Sutar ka jhopda "carpenter's hut". UNESCO World Heritage Site.
Cube houses (Dutch: Kubuswoningen) are a set of innovative houses built in Rotterdam and Helmond in the Netherlands, designed by architect Piet Blom and based on the concept of "living as an urban roof" - Wikipedia Article