Japanese have long been rather fond of folding themselves into a small space (such as the one above) to save money and also to avoid a long trip home after a late night on the town. It works well for travellers as well and a new chain of capsule hotels, Yotel, often constructed by assembling shipping containers into a block, are proving popular around the world.

This room, at Heathrow Airport is ideal for a longish stopover, or if a missed or cancelled flight changes your plans.