Here’s one that’s not for the faint of heart, or should that be the faint of heights? With Diana Ross in tow, the world’s most expensive hotel (NZ$8.5 billion), the Marina Bay Sands development in Singapore, has opened for business. What are some of the resorts standout features? Well for starters, there’s the infinity pool located 55 storeys high – just don’t look down. Lucy Ballinger from MailOnline explores further.