A US-based Doctor Who fan has built a model of the Tardis designed to look bigger on its inside than its outside.

Rather than circumvent the laws of physics Greg Kumparak has relied on augmented reality (AR).

The actual interior of his wooden model features a zebra-striped fabric.

But when a smartphone is held in front of it running an AR app, it appears to show a spacious interior modelled on the ninth and tenth Doctors' time machine.