
"Ambitious engineering projects that have been left in ruins."
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.

S15 E12 • 2/11/2026
Exploring a secret subterranean network in London that inspired James Bond author Ian Fleming, and an Italian country retreat that was designed to brainwash a generation of children.
Featured Cast

6 Episodes • 2017

8 Episodes • 2018

8 Episodes • 2019

12 Episodes • 2019

8 Episodes • 2020

11 Episodes • 2020

12 Episodes • 2021

12 Episodes • 2021

12 Episodes • 2022

12 Episodes • 2022

8 Episodes • 2023

8 Episodes • 2023

8 Episodes • 2024
8 Episodes • 2025

12 Episodes • 2025