Which is the longest tunnel in the world?
Guadarrama, Spain
Iwate-Ichinohe, Japan
Seikan, Japan
Gotthard-Basistunnel, Switzerland
The world's longest and deepest rail tunnel has officially opened in Switzerland, after almost two decades of construction work. The 57km (35-mile) twin-bore Gotthard base tunnel will provide a high-speed rail link under the Swiss Alps between northern and southern Europe.
reach: rather globalarchitecturecountriesrecords
Answers by country
Guadarrama, Spain
Iwate-Ichinohe, Japan
Seikan, Japan
Gotthard-Basistunnel, Switzerland
answers
Australia
24
Spain
12
Republic of Ireland
11
Poland
2488
the United States
115
Germany
45
Greece
15
the United Kingdom
81
Pakistan
15
Canada
53
India
66
the Philippines
13