Michelin Guides (French: Guide Michelin [ɡid miʃ.lɛ̃]) are a series of annual guide books published by the French company Michelin for more than one hundred years. The term normally refers to the Michelin Red Guide, the oldest European hotel and restaurant reference guide, which awards Michelin stars for excellence to a select few establishments. The acquisition or loss of a star can have dramatic effects on the success of a restaurant.