Drusillas Park is starting a new project to celebrate its 100 year anniversary next year.
The zoo, near Alfriston, is asking people to submit videos and photos they have taken over the years there.
These will then be made into a series of videos and photo montages.
People whose content is used will win a free Drusillas family ticket for four people to use.
The park said this is to thank people for being part of the zoo's history.
People who submit photos and videos may also be invited to talk on camera about their memories.
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More information and access to the form to submit these memories can be found at https://www.drusillas.co.uk/news/100-wild-years-call-for-memories.
A spokesman for Drusillas said: "No single day of celebrations could possibly do justice to such an extraordinary moment for us, so we are planning numerous special events to mark the anniversary which will span the entire year.
"Celebrating our 100th anniversary would not be possible without you - our wonderful team, visitors, members, and friends. So it's important to us that you are all a part of it.
"Perhaps you worked at the park many years ago, visited as a child and now bring your grandchildren, had a magical moment with one of our animals, or were there for one of our special events.
"We welcome submissions of any kind, but would particularly love to receive videos - the older the better. "
"We can't wait to weave all your memories into a tapestry of nostalgia to look back on for many years to come."
This project is the first of a number planned for 2025 to celebrate the anniversary.
The park also shared some of their own black-and-white photos of the zoo over the years.
This included a picture of a gorilla and the original entrance to the zoo where a poster advertising the animals was displayed.
A photo was also shared of visitors gathered together while children played on toy cars.
No deadline for the submissions has been given.
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