1. A work consisting of three painted or carved panels that are hinged together.
2. A hinged writing tablet consisting of three leaves, used in ancient Rome.
[From Greek triptukhos, threefold : tri-, tri- + ptux, ptukh-, fold.]
Let's update this a little here. Post three images side by side, joined by a common theme. A little bit of prose might come in handy as to why you consider them linked, whether it's by subject, feeling... or whatever.
Just to keep it bandwidth-friendly, please use MEDIUM-size images.
My first offering:
WINDOWS. Wherever they may be, the first frame that all of use ever see, and something that in photography we all try to recreate in our images - with our own little windows on the world.



(in order, windows from Pisa, Italy; Macau, China and Lutry, Switzerland)