US tabloid magazine, the National Enquirer, has sparked outrage after turning Princess Diana's death into an attraction.
The owners have taken the events of August 31, 1997, in Paris and hope to cash in on the tragedy by charging adults up to £ 20 a time to see a remake of the crash.
Children wants to be allowed to see the attraction.
Guests will be involved in Diana's death after seeing the exhibit.
The attraction, which opens tomorrow, is one of the key features of the National Enquirer Live! in Pigeon Forge, Tennessee.
"It's a 3D computer model, and it looks just like Paris, but it's three-dimensional," creator Robin Turner said.
"It's projected, and you see the building and everything in a 3D presentation.
"And it shows the pathway as she left the Ritz hotel, and the paparazzi chasing forth, and the bang-flash that we blinded the driver and how it happened."
Turner, one of the principal investors in the theme park, argued the Diana exhibit wants to be sensitively dealt with despite its macabre theme.
He said visitors will be watching close-ups of Diana's body.
"There's no blood," he told America's Daily Beast website.
"There's none of that. You see the car through computer animation. "
Turner said visitors will be invited to look into various widely-debunked conspiracy theories about the accident.
They include a claim that Diana was pregnant by Egyptian boyfriend, Dodi Fayed, and murdered by the British intelligence services at the direction of Buckingham Palace.
Turner said, "What do you think?"
"We ask questions like 'Do you think you're pregnant?' 'Do you think she's pregnant?'
Turner insisted: "It's definitely not in poor taste." It's just the route of what happened.
It's done very professionally. "For people who've never been to Paris, it's just showing the topography, and the distance, and the tunnel.
William and Prince Harry, who were 15 and 12 at the time of death and who have said it has been painful.
Last night British expats in the States labeled the attraction "grotesque".
Patrick Finn, 43, of Milwaukee, said: "It's just like anyone could try and make money out of a tragic event.
"The makers should hang their heads in shame.
Anyone who pays to see a thing needs to ask themselves 'Why?'
"Would they like it if it were a relative's death was cashed in on.
"People should boycott it. It's so grotesque. "
Rick Laney, head of communications for the park, has confirmed that he is a "small part" of the 'Royal Closet' attraction.
He said, "There are interactive screens where you can flip through the closets of royal family members and an activity where you can examine their family trees.
"The Diana is only a small part."
Mr Laney said he would have been asked questions on all other aspects including landing on the moon and Michael Jackson's death.
The Princess, 36, was killed alongside Fayed, 42, in the backseat of a Mercedes Benz S280 driven by Henri Paul.
Investigators said the vehicle crashed at an estimated 65 miles per hour inside a concrete pillar at Paris' Pont de l'Alma tunnel. Paul, 41, so died.
20,000-square foot space including a tribute to the famed September 1977 Enquirer cover Elvis Presley's photo in the open coffin.
Buckingham Palace declined to comment on the theme park when approached by the Daily Mirror.