Museum struggles for more space

It is one of the greatest and most visited art museums in the world, and the only one in an old railway station.

Thirty years after the Musee d'Orsay opened its doors for the first time, it has become as much a Paris landmark as its big sister the Louvre just across the River Seine.

But the very success of the museum best known for its unrivalled collection of impressionist paintings is now causing it problems.