When the British wanted to put Napoleon somewhere after his final defeat, they chose about the most remote location possible, St Helena. It was also one of Charles Darwin's stops on his famous voyage.

You can't fly there, and unless you've got your own boat, the only way to get there is by the Royal Mail Ship (RMS) St Helena, the last royal mail vessel still in operation. It only seems to visit St Helena twice a year.

For more information, have a look at St Helena's tourism website.