The Oberon-class HMAS Ovens submarine served Australia for 26 years. Now a museum ship, it lays in dry dock in Fremantle, at the Western Australia Maritime Museum. Here's a full tour.
With 10 propellers and a 10-foot wingspan, NASA's unmanned aerial vehicle can take off like a helicopter, then fly like a plane.
The US Navy's Undersea Rescue Command has a mission: To rescue sailors of all nations during a submarine casualty. Take a tour of its impressive training center in California.
The Oberon-class HMAS Ovens submarine served Australia for 26 years and is now a museum ship in Fremantle, Western Australia. Here's a full tour.
Spaceships are great, but to explore the weird world that is Titan, a space sub might make more sense. Fortunately, NASA is already working on a design.
Tour the ballistic missile submarine Le Redoutable, the largest submarine you can tour without security clearance, and one of the only ballistic missile subs fully accessible to the general public.
The Super Pit is the largest open-pit gold mine in Australia, and one of the largest in the world. House-size machines dig into a canyon-size hole. Here's a full tour.
Take this tour of tours through battlefields, battleships, airfields, aircraft, and more from around the world.
A two-man Greenpeace submarine has been attacked by squids on an expedition in the Bering Sea -- and all the gory details were captured in a Vine.
The new fiber-optic cables will connect nine countries and be capable of speeds of up to 38.3 terabits per second, the Korean network says.