The River Forth flows from its source about 30km west of Stirling in Scotland, and continues past Edinburgh to the sea. Stirling Castle is situated at a strategic crossing point. The river is shown on a map of the Central Lowlands of Scotland and its tributaries are explained.

First broadcast:
6 March 2008

Children could find the bridge and castle that are on the River Forth on a map of the area. The clip could be used as a discussion starter for why the bridge and castle were built there. Other maps could be viewed and other bridges and castles located. Children could then add their own bridge and a castle to their own map of a made up river. Underneath their map they could write the reasons they placed their castle and their bridge in the position they did.