A user at Imgur has put up a photo essay about an in-depth tour of the cruise liner 'Allure Of The Seas'. She's one of the largest passenger vessels ever constructed, almost a quarter of a million tons by the net tonnage standard, carrying up to 6,296 passengers and 2,384 crew. That's the population of a not-too-small town.
The pictures show everything from the above-deck recreation facilities to behind-the-scenes operating, catering and storage facilities in the bowels of the ship. Here are a few examples, greatly reduced in size to fit this blog.
There are many more pictures at the link. Click on any of them to see a larger version. Interesting stuff.