World’s Longest Underwater Tunnel: $3.9bn Project to Connect Continents
By 2028, millions of people will be able to travel between Europe and Asia through an underwater tunnel costing approximately $4 billion (£3.1 billion). The Great Istanbul Tunnel, a four-mile-long multi-purpose underwater structure, will cross the Bosphorus Strait in Istanbul, Turkey. This natural waterway connects the Black Sea to the Sea of Marmara and serves … Read more