According to the folks at YachtWorld.com, interest in houseboats -- especially high-end ones -- is gaining traction wherever there’s water. Once lifted, the vessel is completely stable in up to 25 feet of water and is able to withstand most storm surges. Floating now on Lake Mead, Nevada, this fully customizable vessel features 9-foot ceilings, a waterslide, a hot tub, a theater room and Jet Ski ramps. Living on the water can be a little more complicated than living beside it. If your trip involves large bodies of water, make sure the vessel is seaworthy.