Those who travel frequently often find themselves in between destinations, killing time in an airport. Whether it is a flight delay or a long layover, that downtime can be anything but pleasant. Huge crowds, long lines, and the general chaos that reigns in an airport is not conducive to working or relaxing. That's where the business-class lounges come in. A respite from the madness, these havens range from the very basic to the very luxurious - and knowing which is where can come in handy when planning your itinerary.

Each year, Skytrax ranks the 10 best business-class lounges in the world based on data that includes customer surveys and business research group interviews. The results are in and in the number one spot is Virgin Atlantic's Clubhouse at Heathrow Airport. In addition to a complete office, library, and video projection system, those looking for first class relaxation will find everything they desire. Take a cat nap on a daybed in a hideaway mezzanine, enjoy a meal in one of several dining options or have a drink at the bar. Or use the time to visit the Cowshed Spa, where you can get a facial, massage or even a tan. If all that pampering musses your hair, you can stop by the Bumble and Bumble Hair Salon.

A few North American carriers are beginning to upgrade their lounge offerings, but for now you won't find any of them of Skytrax's top ten list.

Airport facilities are getting more and more elaborate. We've seen airport spas where you can get a manicure or a message and now Heathrow Airport will be opening the Rejuve Wellbeing Club inside terminal one. The 4,500 sq. ft. club will include an exercise area, eight treatment rooms, juice bar, wetroom and an "Innovation Pod." The space is meant to be more than a spa, it is dedicated to total wellbeing offering massages, cardio machines and a nutrition area with healthy foods. The Innovation Pod is an area that is updated on a monthly basis and will offer services like light therapy, an oxygen bar and a tailoring service from Dunhill. Corporate packages and annual packages will be offered and prices start at £25 for day membership.