Catacombs of Paris
Strange and Mysterious Project
Why are they so special?
Why does it exist?
Geiling, Natasha. "Beneath Paris' City Streets, There's an Empire of Death Waiting for Tourists." Smithsonian Magazine. Smithsonian, n.d. Web. 06 Oct. 2016.
"Odessa's Mindbending Catacomb Maps." Atlas Obscura. N.p., 03 Aug. 2016. Web. 04 Oct. 2016.
@Radu316. "Paris Catacombs: Tunnels Of Death In The City Of Light." All That Is Interesting. N.p., 01 Oct. 2014. Web. 06 Oct. 2016.
Smithsonian Magazine. Smithsonian, n.d. Web. 04 Oct. 2016.