Once a busy railway line, Paris's Petite Ceinture fell out of use and was abandoned in the 1930s. It hasn't been forgotten, though. The deserted railway tracks have since been transformed with walking paths, nature trails and gardens, home to a huge variety of plants and animals. Visitors can typically enjoy a peaceful walk along the tracks, taking in graffitied walls rich with greenery and keeping an eye peeled for birds and butterflies.

Take a look at more abandoned train stations around the world here

These abandoned sites are all hidden within the world's biggest cities