International trains are passenger trains that travel between different countries, connecting major cities and regions. They offer a convenient and efficient way to cross borders, often featuring comfortable seating, dining services, and scenic views. Popular routes include the Eurostar between the UK and France and the TGV connecting France with other European nations. These trains typically operate on specialized tracks and may require passengers to go through customs and immigration checks. Many international trains are known for their punctuality and speed, making them a preferred choice for travelers looking to explore multiple countries in a short time.