The Bridge to Nowhere is one of the more unique attractions in the Whanganui National Park.
And the grandson of one of its builders will be in Raetihi on Saturday to tell its story.
Friends of the Mangapurua have been running talks on the area and the next in the series is by John Sanford.
His grandfather, Bert Sandford, was a partner in the Brown and Sandford firm which built the bridge in the mid-1930s.
"They made a beautiful job of it and it is now a focal point for folks coming to the valley," Friends of the Mangapurua chairman Graham West said.