These are some of the most spectacular examples of abandoned engineering the world has ever known. The series explores how and why they were built, consider the financial and social costs of their failure and examine the environmental and ecological impacts. The series also explores how experts came up with plans to make something beautiful or useful from the ruins. Tuesdays at 8pm. Subscribe to UKTV for more clips from Yesterday and our network of channels including Dave, Gold and W. http://bit.ly/YouTubeUKTVSubscribe Facebook: https://www.facebook.com/YesterdayTVC... Twitter: @YesterdayTweets https://twitter.com/YesterdayTweets Instagram: https://instagram.com/UKTV/ Website: http://yesterday.uktv.co.uk Watch full episodes from the UKTV network on UKTV Play: http://uktvplay.uktv.co.uk Download the UKTV Play app: iTunes: http://bit.ly/UKTVPlayiTunes Android: http://bit.ly/UKTVPlayAndroid