Explore over 1.2 million photos of monuments around the world — selected parts of it. There are entries for France, Ireland, Poland,Sweden, the UK and USA.
Here’s an example of what’s available, the Canada Memorial in Green Park, London.
https://commons.m.wikimedia.org/wiki/Category:Canada_Memorial,_London
Outside of the major centres it’s a bit hit and miss, so use in case Google Streetview doesn’t do it for you.
There’s a competition to add photos to Wikipedia.
I’ve found some great pictures in the wikimedia commons…very generous of people to share and give permission for re-use.