A huge spaceship-shaped like monument to Communism and WWII forts which saved countless British lives have been featured in a collection of the world's most intriguing deserted buildings.
In the eyes of the author of Atlas of Abandoned Places Oliver Smith, the globe is littered with forgotten monuments, "their beauty matched only by the secrets of their past".
The decorated travel writer has spent the past few years exploring some of the most remarkable and surprising abandoned architecture.