This section features a unique model of Prague Castle and the area below it from the 10th century, including the original wooden bridge. There are also basalt slabs from the Judith Bridge which date from repairs after floods in 1272. The room itself was part of one of the Judith Bridge's towers and remnants of the side of the bridge are visible.
Pile-driver for water construction designed according the iconography of the 15th century.
Unique depiction of original tower of Judith Bridge, (the painting from 19th century); Zdeněk Dragoun from Archaeological institute