or U-boats, sunk, scuttled, captured, or otherwise lost to German forces during World War II. Here, naval historian Timothy Mulligan describes 25 of the most historically significant U-boats.

Antarctica is still very much unexplored ... Some believe that Hitler escaped Germany as the Allies and Soviets closed in and stowed away on a U-boat heading for the Antarctic. There, on the frozen ...

Traveling to Antarctica on an expedition ship allows you get closer to the landscapes and wildlife ... [+] via RIB boats. Smaller expedition ... hundreds of visitors still go to Antarctica onboard ...

See Antarctica photos submitted to National Geographic by users like you. 1 of 35 This photo was submitted to Your Shot, our photo community on Instagram. Follow us on Instagram at @natgeoyourshot ...

"Guests on early-season Antarctica expeditions are likely to see penguins building their nests and seal pups still being weaned ... via a "Special Operations Boat," which may be easier to get ...

On May 10th, 1945, all the German U-boats were told to surrender. The U249, which was the first German U-boat to arrive in UK waters, came into Weymouth Bay and surrendered. The commanding officer ...

(CNN)-- New Zealand's air force has gone to the rescue of a sick American -- in Antarctica. A crew of 12, plus three medics, flew to evacuate the man Tuesday from the U.S. research base at McMurdo ...

Cruise lines are adding helicopter tours to their menu of amenities. Here's a look at Scenic Cruise's Greenland cruise that ...

Antarctica's nearest neighbour is the tip of South America, although this is still around 1,000km away. It would take over two days to reach it by boat. The Geographic South Pole is the most ...