The french high speed train TGV operates on many routes all across France. It connects Paris with very many of the important cities of the country.
The trains operate with up to 320 km/h and consist of a variety of rolling stock, either single or double deck. All trains have 2nd and 1st class seats and a bar where you can get snacks and drinks. At most seats you will find electrical plugs.
Paris to Lille / Strasbourg / Lyon / Marseille / Nice / Montpellier / Brest / Rennes / Nantes / Bordeaux / Toulouse