Are you looking for something to do on a wet and dreary day? Take your time wandering around the fascinating exhibits at Fondation Dubuffet. There's always an opportunity to learn a thing or two.
When you've spent a bit of time at this museum in 6th Arrondissement, why not make your way to Eiffel Tower, Louvre Museum, and Arc de Triomphe? They're not far from Fondation Dubuffet and also a hit with many tourists.