Here are a few suggestions for your next trip from Köln

In 2 hours, you can reach Bruxelles.

In 3 hours, you can reach Amsterdam, Anvers.

In 4 hours, you can reach Paris, Luxemburg, Hamburg, Rotterdam.

In 5 hours, you can reach Londra, Berlin, Zürich, Esch-sur-Alzette.

In 7 hours, you can reach Schaan, Vaduz.

In 8 hours, you can reach Viena, Praga, Birmingham, Marsilia, Geneva.

In 9 hours, you can reach Copenhaga, Bratislava, Milan, Århus.

In 10+ hours, you can reach Madrid, Roma, București, Budapesta, Varșovia, Stockholm, Dublin, Zagreb, Ljubljana, Monaco...