When I began creating photos made up of multiple connected images, I also started enjoying the way a subject can divide a single image. The straight line of a building or the flat field of the sky mimics the shape of the photo itself, and can momentarily trick your eye into looking at the photo rather than into it.
Top row: Lancaster, Pennsylvania 2012 and 2015
Bottom row: New Orleans, Louisiana 2008 and Grindavík, Iceland 2011
Eastern State Penitentiary, Philadelphia, Pennsylvania 2013
Inter-Laken, Colorado 2014