Kozí Hrádek near Sezimova Ústí

Kozí Hrádek is located near the eastern edge of the city of Sezimovo Ústí. Within sight of the city, but still in the forest. The small ruin of Kozí Hrádek is primarily known as the residence of Master Jan Hus, who found refuge here in 1413 and 1414 at the invitation of Jan of Ústí.
 
It is not known when the castle was built. The oldest report about it is from 1377. It was owned by Vlček z Kozího, and probably from there...