The world's longest and deepest railway tunnel opens Jun. 1 in the Swiss Alps, an engineering feat that will cut journey times across Europe.
Alastair Jamieson and Andy Eckardt, NBC: News Travel
Sun, 05/22/2016 - 12:19am
The world's longest and deepest railway tunnel opens Jun. 1 in the Swiss Alps, an engineering feat that will cut journey times across Europe.