At first glimpse you probably won't believe your eyes - a building in south London that appears to have been flipped upside down.
But this is no ordinary building. With its front door in the air and roof close to the pavement it's a work of art.
The artwork was created by 29-year-old artist Alex Chinneck. It forms part of London's annual Merge Festival which showcases art and music on Bankside.
You can see the building for yourself at 20 Blackfriars Road.