Night trains are on the rise again! While Europe was widely interconnected by night trains until the end of the 20th century, connections decreased dramatically in the past two decades. 2021 marks the European Year of Rail and the resurrection of important new night train connections combined with fresh railway market entrants. The climate crisis and the Covid-19 pandemic have made us question and rethink our travel habits. Night trains are a good example on how to favour a more sustainable mobility.