Château de Chillon is located on the shore of Lake Geneva near Montreux, Switzerland. The first written record of the castle is in 1005. From the mid 12th century, the castle was home to the Counts of Savoy, and it was greatly expanded in the 13th century by Pietro II.
Lord Byron wrote the poem The Prisoner Of Chillon (1816) about François de Bonivard, a Genevois monk and politician who was imprisoned there from 1530 to 1536,
"There are seven pillars of Gothic mould,
In Chillon’s dungeons deep and old"
Byron etched his name in one of the pillars of Bonivard's cell. His attempt at 'street art' can be clearly seen to this day.
View a video of Château Chillon on Google Maps