I’ve been to the Catacombs of Paris museum twice. When it comes to cities, my favorite type of tourism is dark tourism. I like to see where the dreadful went down. And visiting a place that housed 7 million diseased bodies is pretty surreal. On the tour you learn that in fact these tunnels run all throughout Paris. Where there are buildings, there are underground reinforcements to prevent collapses. They don’t tell you about the illegal underground parties, war bunkers, breweries, movie rooms and communities. But they exist…