Kiviloo was founded as an Episcopal castle in 1413. The few ruins of the Episcopal castle (destroyed in the Livonian War in 1558) can be seen even at present. The current eclectic manor house (in private possession) was built during the ownership period of the von Stackelbergs in about 1906-1910 (the earlier wooden structure was burnt down in 1905).
Reference: Estonian Manors
Střekov Castle (Schreckenstein) is perched atop a cliff above the River Elbe, near the city of Ústí nad Labem. It was built in 1316 for John of Luxembourg, the father of the Holy Roman Emperor Charles IV, to guard an important trade route to Germany. After changing hands several times, the castle was acquired by the Lobkowicz family in 1563. Its strategic importance led to occupations by Imperial Habsburg, Saxon, and Swedish forces during the Thirty Years' War, as well as successive sieges by Austrian and Prussian armies during the Seven Years' War.
Although Střekov Castle was heavily damaged during those conflicts and abandoned as a military installation by the end of the 18th century, the 1800s saw many poets and artists visiting the castle, drawn by a new trend of interest in romantic ruins.