Ghost Hunters International - 2008 Larnach Castle 1-8 was released on:
USA: 9 July 2008
Larnach Castle, built in 1871 by William Larnach
Larnach Castle
Larnach Castle is situated on the Otago peninsular, near the city of Dunedin, in the South Island.
Ghost Hunters International - 2008 Castle of the Damned - 1.10 was released on: USA: 23 July 2008
Larnach
Larnach Castle
Ghost Hunters International - 2008 Castle of the Damned 1-10 was released on: USA: 23 July 2008
Larnach castle
Larnach Castle is the best known, though there was also a Cargill's Castle to the south of the city. (Maybe currently derelict?) Larnachs Castle is a popular venue for weddings etc, and has fine gardens.
Ghost Hunters International - 2008 Frankenstein's Castle Belgium and Italy 3-12 was released on: USA: 28 March 2012
Ghost Hunters International - 2008 Chillingham Castle - 1.1 was released on: USA: 9 January 2008 Belgium: 5 March 2010 (limited) Netherlands: 5 March 2010 (limited)
There are two. Larnach Castle, occupied; and Cargill's castle, was derelict, but I don't know its current status.