The manor house of Villa Billnäs was designed by architect Lars Sonck, and built in 1916-1917. It replaced an earlier main building which was built in 1882-1884 and was destroyed by fire in 1915. The building is located in the Billnas Ironworks which was founded in 1641.  It is located in the former municipality of Pohja which has been consolidated into the town of Raseborg, Finland.
The manor house of Villa Billnäs was designed by architect Lars Sonck, and built in 1916-1917. It replaced an earlier main building which was built in 1882-1884 and was destroyed by fire in 1915. The building is located in the Billnas Ironworks which was founded in 1641. It is located in the former municipality of Pohja which has been consolidated into the town of Raseborg, Finland.