S1 E1 · Silent Cities

A look at some of the world's most extraordinary forgotten urban areas.

S1 E2 · Mission: Space

See what became of the HARP gun in Barbados and the Barcroft Observatory in California.

S1 E3 · Lost Bridges

Learn more about some forgotten bridges, including Goat Canyon Trestle and Kinzua Viaduct.

S1 E4 · Ghost Ships

Discover more about some once-great triumphs of marine engineering, now left to rust.

S1 E5 · Quest for Power

Learn more about some forgotten power stations and towers, including Kelenfold in Hungary.

S1 E6 · Roads to Nowhere

Hear how a shifting hill in the Peak District and sand in California caused road closures.