My next lair....

http://www.dailymail.co.uk/news/article-2338877/Migaloo-115m-submarine-yacht-helipad-swimming-pool-moves-deck-submerged.html#ixzz2VsMXezHJ

Actually, I'd prefer a steam-punk Nautilus, with a ram and Peter Lorre as a captive/guest on board....


(Thanks for the link, Dennis!)