Roosna-Alliku (German: Kaltenbrunn) is a small borough in Paide municipality, Järva County in northern-central Estonia.

The current building was built during the ownership of the von Stackelberg family.

[2] Schultz was a popular architect of manor houses in Estonia, who also designed the baroque extension of Toompea Castle, Tallinn.

[3] Some very fine and comprehensive interiors from this time are still preserved complete with the original colour scheme, notably the hall and the "blue salon".

The rich stucco decorations were made by Bohemian stucco master Karl Kalopka, and include typical details in rococo style such as putti, trophies and sheaves, and the owners' coat of arms.