Bauska Castle is a typical example of the 15th-17th century military architecture in Latvia. Its oldest part is the only stronghold the Livonian Order ever built specifically to resist firearms, but the more recent part is a residential castle fortified with bastions, defence walls and ramparts. The structure is the only partially preserved residence of the Kettlers, Dukes of Courland and Semigallia, as well as the only architectural monument in Latvia which illustrates the Mannerism style in the architecture of castles and applied and decorative art of the Duchy of Courland.
In 1970s the renovation of the newest part of the castle was started, to enable this national scale monument of history, archaeology and architecture to be promoted as a site of cultural tourism, to set up themed expositions about Bauska Castle at the crossroads of the history of the Livonian State and the Duchy of Courland.
All those interested can explore the ruins of the Order's castle, climb the central tower, and view the panorama of Bauska and the system of the former fortifications – bastions and walls. The part of the castle which was once the Dukes' residence accommodates a permanent exposition and themed exhibits. Having seen the castle, the visitors can follow a walking path through the castle-mound's park and a meadow, then cross a canal over the bridge, and reach Ķirbaksala islet, the place where the River Lielupe is born.