Devil's Bridge spans the Mynach, a tributary of the Rheidol. The bridge is unusual in that three separate bridges are coexistent, each one built upon the previous bridge.
According to legend the original bridge was built by the Devil, as it was too difficult for mortals to build. The agreement stipulated that the Devil would build the bridge in return for the soul of the first life to cross the bridge. The Devil built the bridge but was tricked by an old woman who threw bread onto the bridge. Her dog crossed the bridge for the bread, thus becoming the first life to cross the new bridge