A train graveyard (or cemetery) is where trains and rolling stock are discarded while awaiting collection, recycling, or destruction. They might be abandoned and left to decay. The term can also be used to include trams. Such vehicle graveyards are distinguished from an abandoned railway, which is a railway line that is no longer used for that purpose, and abandoned railway stations which are similarly disused. Some train graveyards attract visitors and can be a source of tourism, while others have had a role in preserving the history of the railways.