I read somewhere about Parc Monceau. It is in northwestern Paris. Today was another nice day for strolls outside. I took the Metro to the Monceau stop and the park main entrance is right there.
I assume the lake and “ruins” are all staged items. That is, not really some ancient Roman artifacts.
This is the other end of the same lake. And you can see the arch bridge in the background as well.
Back to the original scene, just from a more distant spot.
All in all, it is very pleasant. Many shaded places to walk. Lots of benches. Quite a lot of people, but I found a shaded bench and read a while.
Not surprisingly, there were a lot of children. Many were in the grassed areas either sitting, usually with parents, or playing with a soccer ball.
But, there were specific child-oriented items as well. You can see the carousel below. To the left, out of the picture, are swings. And, most amazing, there was a pony ride! For some fee, your child got to mount a pony and you, the parent, got to lead the pony around some of the park pathways.