The Nautilus, Captain Nemo's submarine from Jules Verne's 20000 Leagues Under the Sea sits in a small body of water in front of Space Mountain. It is a walk through attraction named Les Mystères du Nautilus that lets you explore the interior of the submarine. You enter through the building in the top right of the picture.
The Nautilus matches the rest the the Jules Verne themed Discoveryland very well and definitely adds to it... it also provides some nice picture opportunities
The walk through attraction is very neat as well.
Disneyland Resort Paris, Marne la Vallée, France
To see lots more of my Disney parks pictures please visit my website Disney Character Central
Photoshop CS4, Photomatix Pro, Topaz Adjust