Has anyone been to the Paris Catacombs, also called the 'quarries'?

I am very interested in seeing this place as it contains so much history.

I don't know what you mean by it contains so much history, except that it has something like 6 million skeletons that were unearthed from Paris cemeteries and stacked there to save room. There is about a mile of underground terrain to traverse. It's interesting, but certainly not a major highlight of Paris, IMO.
If it's history you want, I should think there are loads of other places in Paris with more interesting offerings than bones.

We saw the Catacombs last December, and we found them overwhelming.

Room after room of bones (shin bones, skulls, etc) arranged in artful patterns with areas behind chock full of millions of bones from millions of Parisians.

We had 10 days in Paris, and wanted to see them once; I would not necessarily say it would be worth a return visit.

But the scale of the Catacombs is staggering.

My wife and I found the Catacombs interesting. Of course we also found the "Sewers" interesting and historic.

There is so much to do and see in Paris that one always needs to make choices. It is a great city, worth many visits.

Have fun

There are additional comments from earlier posts, if you do a search here...

My wife and I went, and yes there is some history other than the bones but it is not played up much. The Resistance operated from the catacombsduring at least part of WWII. I found the trip interesting and we were both glad we visited.
One thing to note is that you will come out a mile or more from your starting point so make sure you pick up a guide map at the entrance so you can easily find your return to the start point.

Thank you for all your feedback.

I find it interesting that both the French and the Germans were in the tunnels at the same time during war and never met up.

It's also sad to hear that a monk went underground in the late 1700's (?) and ended up dying only meters away from an exit he couldn't find.

Of course I don't expect to see half the sites I saw in photos on various websites, but I would definitely like to visit.

Is there a office to contact or a location that I need to go to. Is it's entry at Denferts Rochereau?

The entrance is easy to spot at the big intersection at Denferts Rochereau. We were sort of amused that they didn't check my backpack going in, but they did coming out. Seems many people try to steal bones and skulls.