Prior to a few years ago, using VR was prohibitively expensive for many architects, and it took far too long for design programs to render 3D spaces. But upgrades in both hardware and software ...

Architectural firms such as Morphosis and Frank Gehry Partners are using virtual reality to take people inside buildings that haven't yet been constructed.

A startup company called The Third Fate envisions virtual reality as a way for architects and builders to offer tours of their designs before they're even constructed.