Since the advent of Google Earth, the world has been explored and mapped down to its last corner. There are no unknown places left, no untouched islands, nothing more to discover - or is there? In this book, Alastair Bonnett presents fascinating and extraordinary locations that significantly challenge our perceptions of the world. They appear and disappear, like the islands in the Ganges Delta, vanish from satellite images, like Sandy Island off the coast of Australia, or hide beneath bushes and undergrowth that obscure all traces, like on the British peninsula of Arne. In an entertaining and light-hearted manner, places like Bir Tawil in East Africa, which adamantly refuses to belong to any nation, or places that seemingly belong to two nation-states at once, are described. The narrative includes hidden labyrinths, underground, abandoned, or overbuilt cities, as well as their historical development. Educational but not preachy, Bonnett guides us through geographical curiosities and shows that for today's humans, the spirit of discovery never truly ends.