High Quality Content by WIKIPEDIA articles! Crosbie Castle (NS 343 300) and the Fullarton estate lie near Troon in South Ayrshire. The site was the home of the Fullarton family for several centuries. The lands were part of the feudal Barony of Corsbie Fullartoune (sic). The Crosbie Castle ruins were eventually used as an ice house after the new Fullarton House mansion was built. The mansion house was later demolished and the area set aside as a public park and golf course.