Thunder Bay is being featured in an episode of Amazing Race Canada.
Tourism Manager Paul Pepe says crews and contestants are in the city this week filming the segment at various locations in the area.
They are expected to be here another couple of days.
His department has been helping the organizers by providing advice on places to shoot scenes.
Pepe says some of the crew have already been here for over a week scouting.
The tourism boss admits he was sworn to secrecy about the arrival until the filming began.
