Rétromobile

The one indoor show on this list, and it earns the exception. Rétromobile fills Paris Expo Porte de Versailles for five days each February with around 600 exhibitors: dealers, clubs, manufacturers' heritage stands and classic car auctions running alongside the halls. The 2027 show runs February 3 to 7. Nothing moves under its own power here, so go for depth rather than noise. It is where you can stand beside a pre-war Grand Prix car, a rally legend and a barn find in the same afternoon, and it is the best place in winter to spot what will be racing at the summer meetings. Weekdays are far calmer than the weekend.