Walt's Restaurant on Main Street USA, in Parc Disneyland, has been looked at here before. It is a beautiful restaurant, with many photographs and pieces of memorabilia relating to Walt Disney throughout. It is a great place to see some fantastic treasures from the Disney Archive.
However, one of the most exciting Walt Disney hidden treasures to watch out for is actually in City Hall at Town Square. On January 8th, 1936, Walt Disney was awarded France's highest honour: the Legion of Honor. It was awarded to Walt Disney by the French Consul, Jean-Joseph Viala, in the Hyperion Studios, "in recognition of Disney's work in creating a new art form in which good will is spread throughout the world".
And this award can be found in City Hall itself. Definitely a hidden priceless Disney treasure.If you would like to read more about Walt Disney being awarded the Legion of Honor, Vintage Disney Collectibles has a fantastic article detailing this.