Sloup is a medieval castle in the Czech lands. It is near Nový Bor in the small town of Sloup v Čechách, in the Liberec Region, north Bohemia, Czech Republic. It takes its name from the special appearance of the freestanding sandstone rocks, 33-metre (108 ft) high, into which it was carved in the 14th century. Sloup means "column".

en.wikipedia.org/wiki/Sloup
www.hradsloup.cz/en/home/