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. 　　译文(2): 这个系列探讨了它们是如何建造的以及为什么建造的，考虑了它们失败的财政和社会成本，并检查了环境和生态影响。该系列还探讨了专家们是如何想出计划，从废墟中制造出美丽或有用的东西的。