U-Boat Worx blew us away with a bonkers superyacht-submarine concept late last year. Now it’s doubling down on the insanity. The Dutch builder, which specializes in both private and commercial subs, ...

U-Boat Worx’s latest concept brings a whole new meaning to “multipurpose.” The 1,250-ton hybrid, known as the Nautilus, features a diesel-electric propulsion system that allows it to cruise across the ...

Editor’s Note: Sign up for Unlocking the World, CNN Travel’s weekly newsletter. Get the latest news in aviation, food and drink, where to stay and other travel developments. There’s been a trend in ...

Call a vessel a “modern world voyager” and it best pack the power and prowess to back that moniker up. At first blush, Tillberg Design of Sweden’s newest concept delivers on both fronts. The explorer ...

(CNN) — There’s been a trend in recent years for billionaire basements – subterranean extensions to the homes of the rich and famous, where they can bunker down and live large. Now an Austrian company ...