Most luxury yachts are designed by renowned naval architects. This one began as a personal vision. A private owner conceived and engineered a floating home unlike almost anything on the market, then partnered with Louisiana-based shipbuilder Breaux Brothers to bring it to life. The result is the GLV-120 Shine Down, a 120-foot aluminium floating mansion listed for $15 million. Featuring a swimming pool, five king suites, four residential decks and a rooftop almost entirely covered in solar panels, the vessel is designed to generate much of its own electricity while offering the comforts of a luxury waterfront home that can travel under its own power.