7. Tunnel at Gotthard Base
Where: Switzerland
Completed Cost: $12 Billion
Year Completed: 2016
Both Switzerland and the Gotthard Base Tunnel resemble the set of your most beloved Disney film. This 35-mile railroad route passes across the towering Swiss Alps. It is genuinely a marvel of the globe, the longest and deepest railway tunnel in the world.
©Pier Marco Tacca/Getty Images Gotthard Base Tunnel
The base tunnel provides the first level, low-level passage over the Alps and is situated at the center of the Gotthard axis. The main goal of the tunnel is to move freight volume from ecologically dangerous large trucks to trains and boost local transport capacity across the Alpine barrier.
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