Haytor Granite Tramway and its unique granite railway tracks
Siegfried Line: An abandoned defence wall that saw both peace and war
Flannan Isles Lighthouse: The unsolved mystery of the three missing keepers
Ruzhany Palace in Belarus was known as the “Versailles of the East”
The ruins of Villers Abbey in Belgium: At its peak it looked like a small town
Underwater ghost village in Portugal, Vilarinho da Furna
