Did you know where the world’s most expensive hotel is located? It is not on the highest roof in the world as you might expect but… right underwater! What is more, it can move. Sounds interesting? Read the article to find out the most expensive luxury hotel rooms in the world designed to impress the billionaires who saw many things in their lives. The Top 10 Ranking contains two underwater options, several penthouses on the world’s most breathtaking roofs, and villas on private islands designed to give you the ultimate touch of luxury, privacy, and beauty. Join our short but impressive tour.