Iranian architecture firm NextOffice blurred the boundaries between indoors and outdoors, and used historic Iranian architecture elements to create the contemporary Guyim Vault House. The Chartaqi, or Chahartaq, was a distinguished element in Iranian architecture thousands of years ago. It was used for many purposes in both secular and religious structures, and consisted of four vaults topped by a dome. The office's main challenge in this project was to find a way to extend the Chartaqi structural system to create a cube and disintegrate spaces at the same time.