What is the Most Expensive Washroom in the World?

Answer:

For this record we travel to the 3D-GOLD Tourism Exhibition in Hong Kong where Lam Sai-wing designed and had built, in 2001. The washroom houses 2 toilets each of 24K gold weighing 280 Kg each. The sinks, toilet brushes, toilet paper holders, mirror frames, chandeliers, tiles and doors are also made of pure gold. The ceiling is littered with over 6,000 precious stones. A washroom costing $3.5 million USD