The Fairyland Trust is hosting its last Norfolk event this autumn after 23 years.
Founders Chris Rose and Sarah Wise are behind the Fairy Fair and The Real Halloween in Bradmoor Woods in West Acre, near Swaffham.
The pair have connected more than 300,000 people to nature since 2001.
In a statement, they said: "For some years, we have been trying to find new, younger people to take on these popular events and spent a year training up some of our most committed crew to take on the overall responsibility in future.
READ MORE: Tickets going on sale for four-day music festival at Norfolk estate
"We hoped and they hoped that would work out, but due to other commitments it did not.
"Shortly before the Fairy Fair, it became clear that we would have to end our lease with Bradmoor Woods after The Real Halloween."
However, The Fairyland Trust will continue its work to engage children with nature.
They added: "Only a third of our attendees are from the county.
"Although we are reluctant to say so, we think basing the events in a more populated part of the country, nearer to a larger pool of both potential visitors and crew, could help make the Fairy Fair and Halloween more sustainable."
The final Norfolk event will be The Real Halloween over the weekend of October 26 and 27 2024.
The opening times are 12.30pm to 6.30pm on Saturday and 11.30am to 5.30pm on Sunday.
It will be a "true celebration of autumnal magic" with music, log fires, traditional games, workshops and drop-in sessions for ages 3+, storytelling, food and drink and a candlelit animal lantern parade.
READ MORE: 5 all-you-can-eat dessert spots in Norfolk
Fancy dress is encouraged, but there is an emphasis on wearing no new plastic due to their sustainability ethos.
Tickets cost £12.50pp each day (some workshops are an additional charge) with under 3s entering for free - parking is £1 (cash only) on the day.
Book at fairylandtrust.org, where you can also read the full statement and become a supporter.
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here