The event saw three Superhero School sessions held at the old Top Shop building as Lancaster welcomed Captain America, Thor, Wonder Woman and Spiderman to the city, with up to 25 children per session.
The would-be Superheroes got to learn the power poses from their favourite heroes, played some games and all went home with a medal, certificate and Superhero goodie bag.
5. Superhero day
Lancaster BID superhero day in the city on Sunday, Picture by Victoria Muir. Photo: Victoria Muir
6. Superhero day
Lancaster BID superhero day in the city on Sunday, Picture by Victoria Muir. Photo: Victoria Muir
7. Superhero day
Lancaster BID superhero day in the city on Sunday, Picture by Victoria Muir. Photo: Victoria Muir
8. Superhero day
Lancaster BID superhero day in the city on Sunday, Picture by Victoria Muir. Photo: Victoria Muir