Star Trek: Short Treks was filmed in Toronto in Canada.
Sherbourne Common
In movie
Scene where Lil knocks over Kima as they head to the shuttle causing her to miss the flight in episode 2x06 “Children of Mars”.
Real
Hearn Generation Plant
In movie
Scene where A short bounty hunter drags a chained-up Harry Mudd through a series of corridors looking for her ship while he tries to convince her to let them work together in episode 1x04 “The Escape Artist”.
Real
Scene was shot The Hearn Generating Station is a decommissioned power plant originally built for coal back in 1951 and converted to natural gas in the 70s. The plant was shut down in the 80s and the site has sat largely unused since then. Most of the equipment inside the plant was scrapped in 2002 when the site was slated to be turned into a film studio, but those plans were eventually abandoned.
Toronto
John H. Daniels Faculty of Architecture, Landscape and Design (U of T)
In movie
Scene where The feud between Kima and Lil grows throughout the school day in episode 2x06 “Children of Mars”.
Real
Bluffer's Sand Beach (Bluffer's Park)
In movie
Scene where Saru lives with his family in a small village on the beach and spends his time looking up at the sky in curiosity in episode 1x03 “The Brightest Star”.