Castillo de Butron is located in Gatika in the province of Biscay, in northern Spain. It dates originally from the Middle Ages although it owes it's present appearance to an almost complete rebuilding begun by Francisco de Cubas in
Gwrych Castle is a Grade I listed country house near Abergele in Conwy county borough, Wales. - The ghostly remains of Gwrych Castle, Wales - built between 1819 and 1825 at the behest of Lloyd Hesketh Bamford-Hesketh.
A key, an instrument used to operate a lock, is typically a small piece of metal consisting of two parts: the blade and the bow. Usually a key operates one specific lock or a small number of locks that are keyed alike, so each lock requires a unique key.