A strange complex of tunnels on the grounds of a bizarre mansion were under lock-and-key for a century, and since its rediscovery, some believe its mysterious place is a gate to hell.
Stories:
1) Villa De Vecchi, Rhodes, Greece;
2) Nuttallburg, West Virginia, USA;
3) The Initiation Well, Quinta da Regaleira, Sintra, Portugal;
4) Botallack and Levant Mines, Cornwall, UK
