Air date: 2023-05-15

Runtime: 44 min

Exploring Air Studios, on the Island of Montserrat, that became a mecca for rock legends. Also Tskaltubo, in Georgia, built to host a fearsome dictator.

Air date: 2023-05-22

Runtime: 44 min

Exploring Haludovo Palace Hotel in Croatia, Wolf's Lair, a German military complex and Herouni Mirror Radio Telescope - a pioneering facility in Armenia.

Air date: 2023-05-29

Runtime: 44 min

Exploring a theme park in Buenos Aires built in a time of terror and dogged by controversy, and a jaw-dropping collection of castles in Turkey.

Air date: 2023-06-05

Runtime: 44 min

Exploring Dover Commando Fortress in South East England, where traces of a top-secret Commando raid are still visible.

Air date: 2023-06-12

Runtime: 43 min

Exploring Old Byron Hot Springs in the Californian desert - a once glittering Hollywood hotspot, converted into a top-secret interrogation centre.

Air date: 2023-06-19

Runtime: 44 min

A symbol of national pride that became a symbol of excess in the Turkish capital of Ankara.

Air date: 2023-06-26

Runtime: 44 min

Exploring Yongma Land - a South Korean dreamland given a second life from the most unlikely of places.

Air date: 2023-07-03

Runtime: 44 min

Exploring Old Joliet Prison, a battered facility near Chicago that descended into open war, but then hosted the Blues Brothers!