Why bother spending millions on a yacht, when you could live comfortably on a Nautilus Hausboot? These luxurious house boats look to be from the pages of an IKEA catalogue, with floor-to-ceiling windows throughout the living space, which bathe the interior with natural light. For sustainability, it's lined with solar panels on the rear deck area.

"Nautilus is helping to push the modern houseboat into the mainstream by offering 4 distinct models that will allow buyers to find the perfect one to meet their needs and family size. Each boat comes with a full deck, ample space, beautiful wooden floors, and a top deck that's perfect for sunbathing. Some of the boats even include a sauna," according to Hi Consumption.