Paris' Petite Ceinture is an abandonned railway inside Paris that goes all aorund the city.

It is closed to public and hardly accessible so you normally cannot go there... But you may find entries here or there and climb up to this forgotten paradise!! Silence, nature taking it's rights back on the city, no or very few people, freedom!!).
Then you can walk there during hours, following the old railways and enjoying being in another world than the usual crowdy, stressy, crazy Paris...
Will definitely go there again to discover some new magic places,abandonned train stations, tunnels, etc... However if you go there try to be at least 2 persons... You never know who's hanging around there... but that's what makes it even more adventurous right?? :)

We’re fizzing with excitement to introduce our latest Kickstarter project: the Lomo’Instant Square. We’re talking about the world’s first analogue camera to produce square-format Instax pictures. It features a 95mm glass lens for super sharp photos, an advanced automatic mode that takes care of exposure, all of Lomography’s signature creative features — and a compact, foldable design. The Lomo’Instant Square has launched on Kickstarter. Come join the fun and back us on Kickstarter now to save up to 35% on the planned retail price, and scoop all sorts of extra treats. Be sure to snatch up the deals before they run out. Be there and be square!