The 2011 World Architecture Awards last week selected Speedskating Stadium Inzell, in southern Germany, as the world's best sports building. The stadium's new roof -- it was formerly an open-air ...

A metal-clad roof designed to reference local barns follows the stepped profile of this house by deMx architecture in the American state of Arkansas.

The new roof was installed at a lower level than the previous roof, meaning that the architecture of the original roof surroundings was lost to time. READ MORE: ...