Demyttenaere and Hocke went viral in 2019 after they posted a photo of themselves hanging out of a train.
The couple is originally from Belgium, but they're based in London and spend the majority of their time traveling.
The photo makes it seem as though the couple could have fallen to their death if they lost their grip but in fact the camera's angle and the turning train hide the track.
"The focus of our pictures is to make them visually appealing,“ Demyttenaere said, and if they are able to get a photo that appears somewhat risky, that's an added bonus.
Their photos have a natural look, they're actually carefully planned, particularly in terms of where the shoot takes place and in what conditions.
"For them, creating a picture like this is a form of art.“