Maastunnel 
Description
The first underwater tunnel in The Netherlands, this is actually a collection of tunnels - a set of road tunnels plus a separate double layer bore for a cycle path and a separate footpath back under the Maas river. Construction started in the 1930's and the tunnels opened during the Second World War. Today they provide a quick link between the North and South banks of the Maas. The original 1930s design is still there, even down to the wooden escalators that take pedestrians and cyclists down to their respective floors.
Charge
Free
Getting There
Latitude: 51.900263; Longitude: 4.468249
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