Art Talk: Centre Pompidou
In contrast to the Louvre, the Centre Pompidou is a much more manageable art museum. For one thing, its permanent collection is displayed on two levels that are easily covered in one visit. And for another, its emphasis is much more focused: modern and contemporary art from 1905 to present day.
There are a couple of bonuses to the Centre Pompidou as well: the splendid view from the fifth floor, and the incredibly fascinating architecture of the building, which opened in 1977.
If the crowds of the Louvre prove to be too much for you, I recommend a visit to the Pompidou as the perfect antidote.