The Collegiate Church is considered one of the oldest monuments in the city of Stuttgart, and it is the main church of the Evangelical Lutheran denomination, and is characterized by its unique architectural structure, as it includes two unequal towers, one octagonal and the other square, and it dates back to the period between the tenth and eleventh centuries, and is a symbol of the historic city of Stuttgart. Inside there is impressive architecture, and right next to the church can be found the oldest building in Stuttgart: the old granary, which today houses an impressive collection of musical instruments.