Dig deep: the world's beautiful tunnels

West Norway’s Lærdal tunnel stretches over 15 miles (24.5km) between the Aurland and Lærdal municipalities, providing a ferry-free connection between Oslo and Bergen. It holds the title of the world's longest road tunnel. The impressive piece of infrastructure opened in 2000 after five years of construction and features three rock chambers, which are illuminated with colorful lights. It also has several state-of-the-art safety stations with emergency equipment and call boxes.