It is one of those extravagant but vote-winning political projects that will almost certainly be filed under "nice-idea-but-who-will-pay?"

Nathalie Kosciusko-Morizet, the centre-right UMP candidate for mayor ofParis, has livened up an otherwise lacklustre campaign with a series of stunning photographs of how the city's ghost metro stations might be used.

To envision what these future public spaces could look like, NKM teamed up with architect Manal Rachdi and urban planner Nicolas Laisné. They drew up a few crazy-looking renderingsto get started, starting with Arsenal, a 4th arrondissement station closed since 1939. She has pledged to solicit more inventive ideas if elected (though her opponent, Socialist Anne Hidalgo, is the frontrunner).