the Great Courtyard, built in the 1760s, is the work of Viapor's founder, Augustin Ehrensvädt. Before its partial destruction during the Crimean War in 1855, the imposing courtyard served as Viapor's central square and administrative centre. At the southern end of the courtyard is August Ehrensvärd's official residence, which today houses the Ehrensvärd Museum. In the centre of the courtyard is the Ehrensvärd Tomb, the final form of which was a collaboration between King Gustav III and August's Ehrensvärd's son Carl August.