20 Avenue Rachel, Paris, France (18th Arrondissement)
A final resting place of many famous artists, this tiered cemetery is full of surprises. The number and size of the tombs is overwhelming. Vegetation and moss flourish while cats stealthily sneak through the immense vaults and crypts. One of the most surprising sights is the overpass, a lattice metal viaduct known as the Pont Caulaincourt, which straddles one section of the cemetery. Are the crypts supporting the viaduct or is the viaduct restraining the crypts?
Read why this cemetery is located beneath a bridge, http://www.messynessychic.com/2014/09/30/buried-under-a-bridge-in-paris-the-misfit-mausoleums-of-montmartre/