In case it isn't obvious, Stacey and I love Paris.
Another interesting footnote. Some of the beautiful broad streets of Paris were constructed so that the various rulers (Royal, Republican and modern) could move troops around the city rapidly and avoid the narrow streets that the people of Paris could (and did) use as fortresses. As you walk around, you'll find quaint areas with twisting narrow streets cut in half by a major broad avenue. Of course, modern tourists see these as beautiful park-like roads, which they are, but that wasn't their original purpose.
Never forget Versailles was built, in large part, because the King of France wasn't really safe living inside Paris any longer. Most of the population of Paris hated the kings.
Then, there is the old joke:
Why are there trees along the Champs Elysees? Because the Germans like marching in the shade.
Bada-Boom!
This sort of thing isn't unique to Paris. In San Francisco there is a road called Park Presidio Blvd. It is three lanes of cars each way with a lovely grassy verge that protect the homes along the road from being right on the busy street. (This is Route 101 heading to the Golden Gate Bridge.) But, if you look closely, you'll see that the grassy verge on either side has two rows of trees and a dirt roadway between them. This was built so that horses could move from the Presidio to Golden Gate Park and vise versa.