Thalys was a brand name used for high-speed train services between Paris Gare du Nord via Brussels-South to either Amsterdam Centraal or to German cities in the Rhein-Ruhr, including Aachen, Cologne, Düsseldorf, Duisburg, Essen and Dortmund. Since 29 September 2023, the services operate under the Eurostar name; sometimes referred to as Eurostar Red, based on the colour of the trains.
