Wheelgate Park has closed its door for the day as a sign of respect for the young child who died after visiting the theme park on Sunday.
A message on the theme park's website said the family 'wonderland' in Farnsfield near Rainworth was closed 'as a mark of respect'.
They said: "Management and staff at Wheelgate Park would like to extend their deepest sympathies to the family of a young child who passed away in hospital after having suddenly taken ill while visiting the park on Sunday 17th April.
"As a mark of respect, the park will be closed on Monday 18th April and reopen on Tuesday 19th April.
"We would like to take this opportunity to thank all our visitors on Sunday 17th April for their co-operation and understanding during what was clearly a very distressing time for the child and his family, and also to extend our gratitude to the work of the all the emergency services, as well as an off duty nurse who assisted immediately and the on-site first aid team."
The boy, was who visiting with his family, reportedly collapsed at the theme park. An air ambulance was called to lift him to hospital, but he died shortly after arriving in hospital.
A neighbour who witnessed the dramatic scene as emergency services arrived said on Facebook: "Helicopter and ambulance and two ambulance cars, and police, (flew) past my house. "I pray nothing life threatening has happened to a young child there."
Police confirmed that the three-year-old died and said there is no suggestion the circumstances of his death were linked to the theme park.
Sophie Jones posted on Facebook: "What a tragic end to a family day out. Thinking of the family at such a sad time."