The late 18th – early 20th-century Rokiškis manor estate is one of the most valuable estate ensembles of the classicism–historicism period in Lithuania. Rokiškis Manor is first mentioned in written historical sources in 1499. The old manor estate lay on the left side of the Laukupis stream. In 1695 Rokiškis Manor was mortgaged to Count J. Tyzenhauz. At the beginning of the 18th century, the widow Vainytė-Krošinskienė, the last of the Krošinskis family, married J. Tyzenhauz as her second husband, and from 1715 the manor passed to this family. Until 1770 the estate was almost continuously leased out, and only at the beginning of the 19th century did Rokiškis Manor become the residence of Ignacy Tyzenhauz. The manor estate was moved away from the town, and the earlier compositional axis linking the manor estate and the church was extended to 1 km. In 1797 a park and an orchard were planted, and in 1801 a new classicist palace was built, which was remodelled in 1905 on the initiative of J. Przezdziecki. After the bed of the Laukupis stream was widened, a pond covering 2 morgen was created next to the park. The architectural forms of the estate buildings reflect the evolution of architectural styles in Lithuania, from classicism to the Art Nouveau forms seen in the palace interior. Particularly original are the synthesis of folk stone-masonry traditions and classicist elements in the outbuildings, the early neo-Gothic forms of the brewery (early 19th century) and the expressive search for historicist architectural forms in the farmhands' quarters and the watchman's house (second half of the 19th century). They make creative use of different combinations of building materials and echo the stepped neo-Gothic motif of St Matthew's Church in Rokiškis. The palace, rebuilt in 1905 to a design by the architects K. Jankowski and P. Lilpop, is artistically one of the most valuable examples of eclectic manor palaces of the historicism period in Lithuania. The compositional axis of the estate is emphasised by the main entrance avenue. It creates a concentrated, central type of layout. The main compositional centre of the estate is the palace and the outbuildings standing perpendicular to it on both sides of a spacious parterre, as well as the mixed-layout park in the eastern part of the estate, with three radial avenues, unique in Lithuania, subordinated to the estate's overall compositional axis. Together they form the core of the estate, emphasise a unified classicist idea and make up the manor ensemble. In the other functional zones of the estate there are separate groups of buildings that do not form clearly defined structures. The estate's planning and spatial structure is described as territorial, concentrated and decentralised. The compositional axis of the estate coincides with the main compositional axis of the town and forms an emphatic classicist town–manor composition between the two main architectural landmarks – St Matthew's Church and the manor palace. It is the only example of such a developed classicist axial composition in Lithuanian urban planning.