The Ahinski Manor () is an early-nineteenth-century country house located in the village of Zaliessie (also Zalesse), Smarhon district in Belarus.
The estate was originally acquired by the Ahinski (Oginski) family in the early eighteenth century. At that time it included a wooden palace, farmyard, pond, mill and a brewery. It had passed through several generations until the early nineteenth century whenàit was bequeathed to Michaà  Kleofas Ogià Âski.
Michaà  Kleofas Ogià Âski, who had been in exile since the defeat of the Koà Âciuszko uprising, returned to the Russian Empire in 1802, following an amnesty by the Tzar. He settled in the Zaliessie estate and began construction of a new stone manor house in a classicist style by architect .
The works completed by 1815 and included a park in the style of Romanticism with trails and bridges across the local river.
Under the ownership of Ogià Âski the manor became a venue for musical concerts and literary events and was described as 'Northern Athens' by contemporaries. In Zaliessie, Michaà  Kleofas Ogià Âski created many of his works, including the famous polonaise in A minor "âÂÂ.
After the death of Michaà  Kleofas Ogià Âski, the estate was owned by several generations of his descendants. It fell on hard times in 1924 and was broken up and sold outside the family.
In Soviet Belarus the estate was used as a holiday resort and a nursing home.
At the beginning of the twenty-first century the manor was in a poor state; however, between 2011 and 2015, large scale restoration works were undertaken.
A museum dedicated to the life and work of Michaà  Kleofas Ogià Âski was opened on the premises after completion of the restoration.