Sorry about the small size displayed here, but the bigger version is copyrighted and being sold by Getty Images; I don't want to trample on anyone's rights, but I do want people to see the big version, so I shrank the image.
I used to shoot IR film years ago, and it made everything look just a little odd; facial features were fuzzed out a bit, but veins and pupils were accentuated. Trees just looked weird; the leaves glowed. Note that this is not thermal infrared, that is, wavelengths so long that you're seeing what you might think of as heat. In this case it's the kind of light just outside what your eye can see. It's amazing how different things look even when the light is changed just a little bit.
Of course, that's why we launch observatories sensitive in the UV, IR, X-rays... things look different in different light. You can learn a lot by metaphorically widening your eyes a bit.