The house and gardens of Claude Monet in Giverny have been restored and are now one of the most visited sites in France. Although the gardens are laid out in long rectilinear beds like other French gardens, Claude Monet personally directed and supervised the plantings. A visit to Giverny helps to understand more about his passion for color, as well as how he lived his life. http://giverny-impression.com has photos and information on the gardens.
http://en.wikipedia.org/wiki/Claude_Monet talks about the artist's life.
Although the house and garden may have fallen into disrepair at some time, they have now been restored as much as possible. It is very moving to walk through rooms that the family used, the artist's studio, and gardens that are recognizable from Monet's paintings.
Sometimes it is hard to see the gardens because of all the tourists.