Transatlantic Tunnel Construction

The concept of a transatlantic tunnel connecting the U.S. and the U.K. by rail is considered high-risk due to the challenges of underwater construction. While recent vacuum technology breakthroughs make it more feasible, experts are skeptical about the costs and speed of trains. Elon Musk proposed a lower-cost solution, but governments are hesitant to invest in this long-term project.

The World's Most Expensive Underwater Hotel Room

The world's most expensive underwater hotel room, Muraka, offers guests breathtaking views from 16ft below the ocean's surface in the Maldives for £17,000-a-night. The room features see-through walls, a personal tunnel for viewing, luxury amenities, and a 24-hour personal butler. The resort also includes unique attractions like the world's first undersea restaurant and an Overwater Spa.