Leisure Island Fun Park on Canvey Island, Essex, has announced its closure on social media but did not give any reasons for its decision.
The attraction had already stopped operating, but it had previously hoped to carry out refurbishments and reopen.
Fantasy Island , a neighbouring attraction, which features an arcade and a children’s activity centre – remains open.
Leisure Island Fun Park had more than 20 rides and attractions on Eastern Esplanade, but the business said these had all been cleared.
In its statement, it thanked everyone who had supported the business and the “nearly 3,000 members of staff” who had worked at the park over the years.
“As everyone knows, 95% of our staff were 16 and 17-year-olds and started their working life at the park,” it added.
“It’s so sad we have had to close the park but hopefully we have created loads of memories for the families that visited us.”
In September 2024, Leisure Island Fun Park said a fire broke out at the site, causing damage to its toilet block, first aid room, baby changing area and compactor.
Derek Gray, who owns the neighbouring Fantasy Island amusement park, hopes another leisure facility will one day occupy the neighbouring vacated site.
