The ICE (InterCity Express) is a high-speed train that connects all major cities in Germany. With speeds up to 300km/h, this is one of the fastest ways to travel between cities such as Berlin, Hamburg and Cologne. The ICE has international connections to Denmark, the Netherlands, Belgium, France, Switzerland and Austria.
If you're looking for an even faster way to travel, you can choose to take the ICE Sprinter. This is the latest generation of ICE trains, running daily during rush hour and making fewer stops than regular ICE trains.