The world’s most incredible engineering projects are revisited to uncover why places full of mysteries and untold secrets are now abandoned ruins.

The town of Epecuen was once a busy lakeside tourist resort. But in 1985, the lake overflowed the town which remained underwater for almost 30 years until the water evaporated and a ghost town emerged – only one habitant never left.

We have also  filmed the episodes in Argentina about Epecuén, Hotel Edén, Campanopolis, Hotel Club de la Ventana.