Inside the World's Greatest Hotels

The staff of the Browns hotel in London, including the hotelier, head concierge and drinks maestro, discuss what it takes to help keep the city's oldest hotel in working order.

Behind the scenes at the Beverly Hilton in Los Angeles, which has played host to Hollywood royalty for the last six decades, as well as a host of politicians. Hotel manager Michael Robertson gives a tour of the penthouse suite where Barack Obama recently rested his head, showbiz reporter Jeremy Louwerse relives the moment he was dragged into the pool for an unexpected dip with Angelina Jolie, and head chef Matt Morgan breaks down what it takes to deliver a three-course dinner for the who's who of Hollywood

Behind the scenes at the Hotel Atlantis in Dubai, which is perched on top of a giant manmade palm tree-shaped island in the Arabian Gulf and opened just 12 years ago. Celebrities and millionaires flock there to experience the hotel's underwater suite, where sharks and 65,000 marine animals swim just feet from the bed.

Behind the scenes at the Peninsula Hong Kong, a baroque building on Kowloon harbour that has two rooftop helipads for its big-spending customers. Fleet manager Martin Oxley gives a guided tour in one of the hotel's 14 green Rolls-Royces, while executive chef Florien Trento shows off the Philippe Starck-designed Felix restaurant.