During a visit to Portugal for work I visited Pena Palace which is situated in Sintra (nr. Lisbon). Their have been reports of paranormal activity in the Palace.
It is high up in the hills and you drive up a windy narrow road to get there. Certainly fits the bill for a haunted house!
The fog in one of the photos are clouds - that's how high it is.
If I win the lottery then we are gonna do an investigation there!