Everything to know about the catacombs in Paris - Tripadvisor
https://www.tripadvisor.com/Articles-ldvGnWsUgXEc-What_are_the_catacombs_paris.html
WEBAug 18, 2022 · But unknown to many visitors, there’s a darker side to Paris underneath its bright and bustling cityscape: The hidden world of the Catacombs of Paris. There are a number of reasons to head underground: Less crowds, cooler temperatures, and, of course, a look at the city's buried history told through thousands of ancient bones.
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